diff --git a/locale/fr/LC_MESSAGES/django.mo b/locale/fr/LC_MESSAGES/django.mo
index ab9d1a7..9d41c78 100644
Binary files a/locale/fr/LC_MESSAGES/django.mo and b/locale/fr/LC_MESSAGES/django.mo differ
diff --git a/locale/fr/LC_MESSAGES/django.po b/locale/fr/LC_MESSAGES/django.po
index 9add410..e6de0eb 100644
--- a/locale/fr/LC_MESSAGES/django.po
+++ b/locale/fr/LC_MESSAGES/django.po
@@ -8,7 +8,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: PACKAGE VERSION\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2016-10-18 22:01+0000\n"
+"POT-Creation-Date: 2016-10-21 22:51+0000\n"
 "PO-Revision-Date: YEAR-MO-DA HO:MI+ZONE\n"
 "Last-Translator: FULL NAME <EMAIL@ADDRESS>\n"
 "Language-Team: LANGUAGE <LL@li.org>\n"
@@ -85,8 +85,8 @@ msgstr "J’accepte d’être enregistré en vidéo"
 msgid "Video licence"
 msgstr "Licence vidéo"
 
-#: accounts/models.py:80 proposals/models.py:115
-#: proposals/templates/proposals/talk_detail.html:87
+#: accounts/models.py:80 proposals/models.py:116
+#: proposals/templates/proposals/talk_detail.html:86
 #: proposals/templates/proposals/user_details.html:57
 msgid "Notes"
 msgstr "Notes"
@@ -209,7 +209,7 @@ msgid "Delete These"
 msgstr "Supprimer ces"
 
 #: accounts/templates/registration/login.html:11
-#: ponyconf/templates/base.html:101
+#: ponyconf/templates/base.html:111
 msgid "Login"
 msgstr "Se connecter"
 
@@ -274,20 +274,28 @@ msgid "You can use this page to communicate with the staff."
 msgstr ""
 "Vous pouvez utiliser cette page pour communiquer avec l’équipe organisatrice."
 
-#: planning/templates/planning/program.html:9 ponyconf/templates/base.html:76
+#: planning/templates/planning/program.html:9 ponyconf/templates/base.html:86
 msgid "Program"
 msgstr "Programme"
 
-#: planning/templates/planning/room_detail.html:19
-#: planning/templates/planning/room_detail.html:28
+#: planning/templates/planning/room_detail.html:13
+msgid "Scheduled talks"
+msgstr "Exposés planifiés"
+
+#: planning/templates/planning/room_detail.html:22
+#: planning/templates/planning/room_detail.html:33
 msgid "No talks."
 msgstr "Aucun exposé."
 
+#: planning/templates/planning/room_detail.html:25
+msgid "Unscheduled talks"
+msgstr "Exposés non planifiés"
+
 #: planning/templates/planning/room_form.html:14
 msgid "Room"
 msgstr "Salle"
 
-#: planning/templates/planning/room_list.html:9 ponyconf/templates/base.html:73
+#: planning/templates/planning/room_list.html:9 ponyconf/templates/base.html:83
 msgid "Rooms"
 msgstr "Salles"
 
@@ -300,14 +308,11 @@ msgid "place"
 msgstr ""
 
 #: planning/templates/planning/room_list.html:24
-#, fuzzy
-#| msgid "Filter talks already / not yet scheduled"
 msgid "Some talks are not scheduled yet."
-msgstr "Filtrer les exposés déjà / pas encore planifiées"
+msgstr "Certains exposés ne sont pas encore planifiés."
 
 #: planning/templates/planning/room_list.html:25
-#: proposals/templates/proposals/talk_list.html:56
-#: proposals/templates/proposals/talk_list.html:92
+#: proposals/templates/proposals/talk_list.html:41
 #: proposals/templates/proposals/topic_list.html:23
 #: proposals/templates/proposals/track_list.html:23
 msgid "talk"
@@ -317,36 +322,11 @@ msgstr "exposé"
 msgid "No rooms."
 msgstr "Aucune salle."
 
-#: planning/templates/planning/talk_detail.html:20
-#: proposals/templates/proposals/talk_detail.html:68
-msgid "No speakers."
-msgstr "Aucun orateur."
-
-#: planning/templates/planning/talk_detail.html:37 proposals/models.py:47
-#: proposals/models.py:70 proposals/models.py:112
-#: proposals/templates/proposals/talk_detail.html:57
-msgid "Description"
-msgstr "Description"
-
-#: planning/templates/planning/talk_detail2.html:62 proposals/models.py:111
-msgid "Abstract"
-msgstr "Résumé"
-
-#: planning/templates/planning/talk_detail2.html:78
-#, fuzzy
-#| msgid "average:"
-msgid "Coverage"
-msgstr "moyenne :"
-
-#: planning/templates/planning/talk_detail2.html:94
-msgid "See more"
-msgstr "Voir plus"
-
-#: ponyconf/settings.py:139
+#: ponyconf/settings.py:140
 msgid "English"
 msgstr "Anglais"
 
-#: ponyconf/settings.py:140
+#: ponyconf/settings.py:141
 msgid "French"
 msgstr "Français"
 
@@ -354,64 +334,74 @@ msgstr "Français"
 msgid "Home"
 msgstr "Accueil"
 
-#: ponyconf/templates/base.html:47
+#: ponyconf/templates/base.html:48
 #: proposals/templates/proposals/participate.html:9
 msgid "Participate"
 msgstr "Participer"
 
-#: ponyconf/templates/base.html:48 proposals/models.py:113
-#: proposals/templates/proposals/talk_list.html:47
+#: ponyconf/templates/base.html:51
+msgid "Propose an intervention"
+msgstr "Proposer une intervention"
+
+#: ponyconf/templates/base.html:54
+#: volunteers/templates/volunteers/participate.html:9
+msgid "Enrole as volunteer"
+msgstr "Devenir bénévole"
+
+#: ponyconf/templates/base.html:58 proposals/models.py:114
+#: proposals/templates/proposals/talk_detail.html:22
+#: proposals/templates/proposals/talk_list.html:48
 #: proposals/templates/proposals/topic_list.html:9
 msgid "Topics"
 msgstr "Thèmes"
 
-#: ponyconf/templates/base.html:50
+#: ponyconf/templates/base.html:60
 #: proposals/templates/proposals/track_list.html:9
 msgid "Tracks"
 msgstr "Sessions"
 
-#: ponyconf/templates/base.html:59
+#: ponyconf/templates/base.html:69
 msgid "Listing"
 msgstr "Liste"
 
-#: ponyconf/templates/base.html:62
+#: ponyconf/templates/base.html:72
 #: proposals/templates/proposals/talk_list.html:9
 #: proposals/templates/proposals/user_details.html:20
 msgid "Talks"
 msgstr "Exposés"
 
-#: ponyconf/templates/base.html:65 proposals/models.py:108
+#: ponyconf/templates/base.html:75 proposals/models.py:109
 #: proposals/templates/proposals/speaker_list.html:9
-#: proposals/templates/proposals/talk_detail.html:61
-#: proposals/templates/proposals/talk_list.html:46
+#: proposals/templates/proposals/talk_detail.html:60
+#: proposals/templates/proposals/talk_list.html:47
 msgid "Speakers"
 msgstr "Orateurs"
 
-#: ponyconf/templates/base.html:70
+#: ponyconf/templates/base.html:80
 msgid "Planning"
 msgstr ""
 
-#: ponyconf/templates/base.html:81
+#: ponyconf/templates/base.html:91
 msgid "Administration"
 msgstr "Administration"
 
-#: ponyconf/templates/base.html:88
+#: ponyconf/templates/base.html:98
 msgid "Conference"
 msgstr "Conférence"
 
-#: ponyconf/templates/base.html:90
+#: ponyconf/templates/base.html:100 volunteers/models.py:15
 msgid "Participants"
 msgstr "Participants"
 
-#: ponyconf/templates/base.html:91
+#: ponyconf/templates/base.html:101
 msgid "Correspondence"
 msgstr "Correspondance"
 
-#: ponyconf/templates/base.html:100
+#: ponyconf/templates/base.html:110
 msgid "Register"
 msgstr "S’inscrire"
 
-#: ponyconf/templates/base.html:126
+#: ponyconf/templates/base.html:136
 msgid "Powered by"
 msgstr "Propulsé par"
 
@@ -449,56 +439,65 @@ msgstr "Assigner à une session"
 msgid "Put in a room"
 msgstr "Assigner à une salle"
 
-#: proposals/models.py:45 proposals/models.py:68
+#: proposals/models.py:46 proposals/models.py:69 volunteers/models.py:12
 msgid "Name"
 msgstr "Nom"
 
-#: proposals/models.py:49
+#: proposals/models.py:48 proposals/models.py:71 proposals/models.py:113
+#: proposals/templates/proposals/talk_detail.html:56 volunteers/models.py:14
+msgid "Description"
+msgstr "Description"
+
+#: proposals/models.py:50
 msgid "Managers"
 msgstr "Responsables"
 
-#: proposals/models.py:71
+#: proposals/models.py:72
 msgid "Destination track"
 msgstr "Session de destination"
 
-#: proposals/models.py:73
+#: proposals/models.py:74
 msgid "Reviewers"
 msgstr "Responsables"
 
-#: proposals/models.py:89
+#: proposals/models.py:90
 msgid "Default duration (min)"
 msgstr "Durée par défaut (min)"
 
-#: proposals/models.py:90
+#: proposals/models.py:91
 msgid "Color on program"
 msgstr "Couleur sur le programme"
 
-#: proposals/models.py:109 proposals/templates/proposals/talk_list.html:44
+#: proposals/models.py:110 proposals/templates/proposals/talk_list.html:45
 msgid "Title"
 msgstr "Titre"
 
-#: proposals/models.py:109
+#: proposals/models.py:110
 msgid "After submission, title can only be changed by the staff."
 msgstr ""
 "Après soumission, le titre ne peut être modifié que par l’équipe "
 "d’organisation."
 
-#: proposals/models.py:113
+#: proposals/models.py:112
+msgid "Abstract"
+msgstr "Résumé"
+
+#: proposals/models.py:114
 msgid "The topics can not be changed after submission."
 msgstr "Les thèmes ne peuvent pas être modifiés après soumission."
 
-#: proposals/models.py:114 proposals/templates/proposals/talk_detail.html:29
-#: proposals/templates/proposals/talk_detail.html:74
-#: proposals/templates/proposals/talk_list.html:48
+#: proposals/models.py:115 proposals/templates/proposals/talk_detail.html:29
+#: proposals/templates/proposals/talk_detail.html:73
+#: proposals/templates/proposals/talk_list.html:49
 #: proposals/templates/proposals/track_form.html:14
 msgid "Track"
 msgstr "Session"
 
-#: proposals/models.py:116 proposals/templates/proposals/talk_list.html:45
+#: proposals/models.py:117 proposals/templates/proposals/talk_list.html:46
 msgid "Intervention kind"
 msgstr "Type d’intervention"
 
-#: proposals/models.py:119
+#: proposals/models.py:120
 msgid "Duration (min)"
 msgstr "Durée (min)"
 
@@ -528,7 +527,7 @@ msgstr "par"
 
 #: proposals/templates/proposals/_talk_list.html:11
 #: proposals/templates/proposals/_talk_list.html:17
-#: proposals/templates/proposals/talk_list.html:66
+#: proposals/templates/proposals/talk_list.html:64
 msgid "and"
 msgstr "et"
 
@@ -571,47 +570,46 @@ msgstr "Afficher les options de filtrage…"
 msgid "Filter"
 msgstr "Filtrer"
 
-#: proposals/templates/proposals/speaker_list.html:46
+#: proposals/templates/proposals/speaker_list.html:44
+#: proposals/templates/proposals/talk_list.html:41
+msgid "Total:"
+msgstr "Total :"
+
+#: proposals/templates/proposals/speaker_list.html:44
+msgid "speaker"
+msgstr "orateur"
+
+#: proposals/templates/proposals/speaker_list.html:48
 msgid "Username"
 msgstr "Nom d’utilisateur"
 
-#: proposals/templates/proposals/speaker_list.html:47
+#: proposals/templates/proposals/speaker_list.html:49
 msgid "Fullname"
 msgstr "Prénom et nom"
 
-#: proposals/templates/proposals/speaker_list.html:48
+#: proposals/templates/proposals/speaker_list.html:50
 msgid "Talk count"
 msgstr "Nombre d’exposé"
 
-#: proposals/templates/proposals/speaker_list.html:49
+#: proposals/templates/proposals/speaker_list.html:51
 msgctxt "table column title"
 msgid "Need transport?"
 msgstr "Transport ?"
 
-#: proposals/templates/proposals/speaker_list.html:50
+#: proposals/templates/proposals/speaker_list.html:52
 msgctxt "table column title"
 msgid "Need accommodation?"
 msgstr "Hébergement ?"
 
-#: proposals/templates/proposals/speaker_list.html:51
+#: proposals/templates/proposals/speaker_list.html:53
 msgid "Need sound?"
 msgstr "Son ?"
 
-#: proposals/templates/proposals/speaker_list.html:90
+#: proposals/templates/proposals/speaker_list.html:92
 #: proposals/templates/proposals/user_details.html:9
 msgid "Contact"
 msgstr "Contacter"
 
-#: proposals/templates/proposals/speaker_list.html:100
-#: proposals/templates/proposals/talk_list.html:56
-#: proposals/templates/proposals/talk_list.html:92
-msgid "Total:"
-msgstr "Total :"
-
-#: proposals/templates/proposals/speaker_list.html:100
-msgid "speaker"
-msgstr "orateur"
-
 #: proposals/templates/proposals/talk_decide.html:9
 msgid "Are you sure to accept this proposals?"
 msgstr "Êtes-vous sûr d’accepter cette propositon d’intervention ?"
@@ -663,14 +661,8 @@ msgid "No abstract provided."
 msgstr "Aucun résumé fourni."
 
 #: proposals/templates/proposals/talk_detail.html:20
-#, fuzzy
-#| msgid "Format:"
 msgid "Format"
-msgstr "Format :"
-
-#: proposals/templates/proposals/talk_detail.html:22
-msgid "Topics:"
-msgstr "Thèmes :"
+msgstr "Format"
 
 #: proposals/templates/proposals/talk_detail.html:26
 #: proposals/templates/proposals/topic_list.html:31
@@ -678,78 +670,78 @@ msgid "No topics."
 msgstr "Aucun thème."
 
 #: proposals/templates/proposals/talk_detail.html:33
-#: proposals/templates/proposals/talk_detail.html:75
+#: proposals/templates/proposals/talk_detail.html:74
 msgid "No assigned yet."
 msgstr "Pas encore assigné."
 
-#: proposals/templates/proposals/talk_detail.html:41
-#: proposals/templates/proposals/talk_detail.html:49
+#: proposals/templates/proposals/talk_detail.html:40
+#: proposals/templates/proposals/talk_detail.html:48
 msgid "not defined"
 msgstr "non défini"
 
-#: proposals/templates/proposals/talk_detail.html:59
+#: proposals/templates/proposals/talk_detail.html:58
 msgid "No description provided."
 msgstr "Aucune description fournie."
 
-#: proposals/templates/proposals/talk_detail.html:79
+#: proposals/templates/proposals/talk_detail.html:67
+msgid "No speakers."
+msgstr "Aucun orateur."
+
+#: proposals/templates/proposals/talk_detail.html:78
 msgid "Assign to"
 msgstr "Assigner à"
 
-#: proposals/templates/proposals/talk_detail.html:89
+#: proposals/templates/proposals/talk_detail.html:88
 msgid "No notes."
 msgstr "Aucune note."
 
-#: proposals/templates/proposals/talk_detail.html:93
+#: proposals/templates/proposals/talk_detail.html:92
 msgid "Moderation"
 msgstr "Modération"
 
-#: proposals/templates/proposals/talk_detail.html:95
-#: proposals/templates/proposals/talk_list.html:49
+#: proposals/templates/proposals/talk_detail.html:94
+#: proposals/templates/proposals/talk_list.html:50
 msgid "Status"
 msgstr "Statut"
 
-#: proposals/templates/proposals/talk_detail.html:100
-#, fuzzy
-#| msgid "Vote:"
+#: proposals/templates/proposals/talk_detail.html:99
 msgid "Vote"
-msgstr "Vote :"
+msgstr "Vote"
 
-#: proposals/templates/proposals/talk_detail.html:109
+#: proposals/templates/proposals/talk_detail.html:108
 msgid "vote"
 msgstr "vote"
 
-#: proposals/templates/proposals/talk_detail.html:109
+#: proposals/templates/proposals/talk_detail.html:108
 msgid "average:"
 msgstr "moyenne :"
 
-#: proposals/templates/proposals/talk_detail.html:115
-#, fuzzy
-#| msgid "Messages:"
+#: proposals/templates/proposals/talk_detail.html:114
 msgid "Messages"
-msgstr "Messages :"
+msgstr "Messages"
 
-#: proposals/templates/proposals/talk_detail.html:116
+#: proposals/templates/proposals/talk_detail.html:115
 msgid "These messages are for organization team only."
 msgstr "Ces messages sont à destination de la team d’organisation seulement."
 
-#: proposals/templates/proposals/talk_list.html:78
+#: proposals/templates/proposals/talk_list.html:76
 msgid "Accepted"
 msgstr "Accepté"
 
-#: proposals/templates/proposals/talk_list.html:80
+#: proposals/templates/proposals/talk_list.html:78
 msgid "Declined"
 msgstr "Décliné"
 
-#: proposals/templates/proposals/talk_list.html:82
+#: proposals/templates/proposals/talk_list.html:80
 #, python-format
 msgid "Pending, score: %(score)s"
 msgstr "En cours, score : %(score)s"
 
-#: proposals/templates/proposals/talk_list.html:100
+#: proposals/templates/proposals/talk_list.html:93
 msgid "For selected talks:"
 msgstr "Pour les exposés sélectionnés :"
 
-#: proposals/templates/proposals/talk_list.html:108
+#: proposals/templates/proposals/talk_list.html:101
 msgid "Apply"
 msgstr "Appliquer"
 
@@ -825,44 +817,40 @@ msgstr "Accepte d’être enregistré en vidéo :"
 msgid "Video licence:"
 msgstr "Licence vidéo :"
 
-#: proposals/views.py:213
+#: proposals/views.py:214
 msgid "Talk modified successfully!"
 msgstr "Exposé modifié avec succès !"
 
-#: proposals/views.py:219
+#: proposals/views.py:220
 msgid "Talk proposed successfully!"
 msgstr "Exposé proposé avec succès !"
 
-#: proposals/views.py:234
+#: proposals/views.py:235
 msgid "Talk assigned to track successfully!"
 msgstr "Exposé assigné à la session avec succès !"
 
-#: proposals/views.py:303
+#: proposals/views.py:304
 msgid "Vote successfully created"
 msgstr "A voté !"
 
-#: proposals/views.py:303
+#: proposals/views.py:304
 msgid "Vote successfully updated"
 msgstr "Vote mis à jour"
 
-#: proposals/views.py:329
+#: proposals/views.py:330
 msgid "Decision taken in account"
 msgstr "Décision enregistrée"
 
-#~ msgid "Abstract:"
-#~ msgstr "Résumé :"
+#: volunteers/templates/volunteers/participate.html:19
+msgid "Sorry, I have a setback"
+msgstr "Désolé, j’ai un contretemps"
 
-#~ msgid "Description:"
-#~ msgstr "Description :"
+#: volunteers/templates/volunteers/participate.html:21
+msgid "I will be happy to help on that!"
+msgstr "Je serai heureux d’aider à cela !"
 
-#~ msgid "Speakers:"
-#~ msgstr "Orateurs :"
-
-#~ msgid "Track:"
-#~ msgstr "Session :"
-
-#~ msgid "Notes:"
-#~ msgstr "Notes :"
-
-#~ msgid "Status:"
-#~ msgstr "Statut :"
+#: volunteers/templates/volunteers/participate.html:28
+msgid "We are not yet looking for volunteers … come back later!"
+msgstr ""
+"Nous ne sommes pas encore en recherche de bénévoles … mais revenez plus "
+"tard !"
diff --git a/ponyconf/templates/base.html b/ponyconf/templates/base.html
index b2041ac..312c63b 100644
--- a/ponyconf/templates/base.html
+++ b/ponyconf/templates/base.html
@@ -43,7 +43,17 @@
           <ul class="nav navbar-nav">
             <li{% block hometab %}{% endblock %}><a href="{% url 'home' %}">{% trans "Home" %}</a></li>
             {% if request.user.is_authenticated %}
-            <li{% block participatetab %}{% endblock %}><a href="{% url 'participate' %}">{% trans "Participate" %}</a></li>
+            <li class="dropdown{% block participatetab %}{% endblock %}">
+              <a href="#" class="dropdown-toggle" data-toggle="dropdown"><span class="glyphicon glyphicon-th"></span>&nbsp;{% trans "Participate" %}&nbsp;<span class="caret"></span></a>
+              <ul class="dropdown-menu" role="menu">
+                <li role="presentation">
+                  <a role="menuitem" tabindex="-1" href="{% url 'participate-as-speaker' %}"><span class="glyphicon glyphicon-bullhorn"></span>&nbsp;{% trans "Propose an intervention" %}</a>
+                </li>
+                <li role="presentation">
+                  <a role="menuitem" tabindex="-1" href="{% url 'participate-as-volunteer' %}"><span class="glyphicon glyphicon-thumbs-up"></span>&nbsp;{% trans "Enrole as volunteer" %}</a>
+                </li>
+              </ul>
+            </li>
             <li{% block topictab %}{% endblock %}><a href="{% url 'list-topics' %}">{% trans "Topics" %}</a></li>
             {% if request|staff %}
             <li{% block tracktab %}{% endblock %}><a href="{% url 'list-tracks' %}">{% trans "Tracks" %}</a></li>
diff --git a/ponyconf/urls.py b/ponyconf/urls.py
index 761630d..05cd5f2 100644
--- a/ponyconf/urls.py
+++ b/ponyconf/urls.py
@@ -24,5 +24,6 @@ urlpatterns = [
     url(r'', include('proposals.urls')),
     url(r'^conversations/', include('conversations.urls')),
     url(r'^planning/', include('planning.urls')),
+    url(r'^volunteers/', include('volunteers.urls')),
     url(r'^select2/', include('django_select2.urls')),
 ] + static(settings.MEDIA_URL, document_root=settings.MEDIA_ROOT)
diff --git a/proposals/urls.py b/proposals/urls.py
index a4686ef..30d12c4 100644
--- a/proposals/urls.py
+++ b/proposals/urls.py
@@ -6,7 +6,7 @@ urlpatterns = [
     url(r'^markdown/$', views.markdown_preview, name='markdown'),
     url(r'^$', views.home, name='home'),
     url(r'^conference/$', views.conference, name='conference'),
-    url(r'^participate/$', views.participate, name='participate'),
+    url(r'^talk/propose/$', views.participate, name='participate-as-speaker'),
     url(r'^talk/$', views.talk_list, name='list-talks'),
     url(r'^talk/add/$', views.talk_edit, name='add-talk'),
     url(r'^talk/edit/(?P<talk>[-\w]+)$', views.talk_edit, name='edit-talk'),
diff --git a/volunteers/forms.py b/volunteers/forms.py
new file mode 100644
index 0000000..4ed18d1
--- /dev/null
+++ b/volunteers/forms.py
@@ -0,0 +1,9 @@
+from django import forms
+
+from .models import Activity
+
+
+class ActivityForm(forms.ModelForm):
+    class Meta:
+        model = Activity
+        fields=['name', 'description', 'participants']
diff --git a/volunteers/migrations/0001_initial.py b/volunteers/migrations/0001_initial.py
index 3fcd7f2..286579d 100644
--- a/volunteers/migrations/0001_initial.py
+++ b/volunteers/migrations/0001_initial.py
@@ -1,7 +1,8 @@
 # -*- coding: utf-8 -*-
-# Generated by Django 1.10 on 2016-10-19 21:17
+# Generated by Django 1.10.1 on 2016-10-21 22:12
 from __future__ import unicode_literals
 
+import autoslug.fields
 from django.conf import settings
 from django.db import migrations, models
 import django.db.models.deletion
@@ -12,8 +13,8 @@ class Migration(migrations.Migration):
     initial = True
 
     dependencies = [
-        ('sites', '0002_alter_domain_unique'),
         migrations.swappable_dependency(settings.AUTH_USER_MODEL),
+        ('sites', '0002_alter_domain_unique'),
     ]
 
     operations = [
@@ -22,6 +23,7 @@ class Migration(migrations.Migration):
             fields=[
                 ('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
                 ('name', models.CharField(max_length=256, verbose_name='Name')),
+                ('slug', autoslug.fields.AutoSlugField(editable=False, populate_from='name')),
                 ('description', models.TextField(blank=True, verbose_name='Description')),
                 ('participants', models.ManyToManyField(blank=True, to=settings.AUTH_USER_MODEL, verbose_name='Participants')),
                 ('site', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, to='sites.Site')),
diff --git a/volunteers/models.py b/volunteers/models.py
index bebf4ca..4c948e1 100644
--- a/volunteers/models.py
+++ b/volunteers/models.py
@@ -3,11 +3,14 @@ from django.contrib.sites.models import Site
 from django.utils.translation import ugettext_lazy as _
 from django.contrib.auth.models import User
 
+from autoslug import AutoSlugField
+
 
 class Activity(models.Model):
 
     site = models.ForeignKey(Site, on_delete=models.CASCADE)
     name = models.CharField(max_length=256, verbose_name=_('Name'))
+    slug = AutoSlugField(populate_from='name')
     description = models.TextField(blank=True, verbose_name=_('Description'))
     participants = models.ManyToManyField(User, blank=True, verbose_name=_('Participants'))
 
diff --git a/volunteers/templates/volunteers/participate.html b/volunteers/templates/volunteers/participate.html
new file mode 100644
index 0000000..4a5db92
--- /dev/null
+++ b/volunteers/templates/volunteers/participate.html
@@ -0,0 +1,31 @@
+{% extends 'base.html' %}
+
+{% load accounts_tags i18n %}
+
+{% block participatetab %} class="active"{% endblock %}
+
+{% block content %}
+
+<h1>{% trans "Enrole as volunteer" %}</h1>
+
+{% for activity in activities %}
+{% if forloop.first %}<div class="list-group">{% endif %}
+  <div class="list-group-item{% if request.user in activity.participants.all %} list-group-item-info{% endif %}">
+    <h4 clas="list-group-item-heading">{{ activity.name }}</h4>
+    <p class="list-group-item-text">
+      <p>{{ activity.description }}</p>
+      <p>
+        {% if request.user in activity.participants.all %}
+        <a class="btn btn-danger" href="{% url 'enrole-in-activity' slug=activity.slug %}">{% trans "Sorry, I have a setback" %}</a>
+        {% else %}
+        <a class="btn btn-primary" href="{% url 'enrole-in-activity' slug=activity.slug %}">{% trans "I will be happy to help on that!" %}</a>
+        {% endif %}
+      </p>
+    </p>
+  </div>
+{% if forloop.last %}</div>{% endif %}
+{% empty %}
+<em>{% trans "We are not yet looking for volunteers … come back later!" %}</em>
+{% endfor %}
+
+{% endblock %}
diff --git a/volunteers/urls.py b/volunteers/urls.py
new file mode 100644
index 0000000..9df2eac
--- /dev/null
+++ b/volunteers/urls.py
@@ -0,0 +1,12 @@
+from django.conf.urls import url
+
+from . import views
+
+
+urlpatterns = [
+    url(r'^enrole/$', views.participate, name='participate-as-volunteer'),
+    url(r'^activities/$', views.ActivityList.as_view(), name='list-activities'),
+    url(r'^activities/add/$', views.ActivityCreate.as_view(), name='add-activity'),
+    url(r'^activities/(?P<slug>[-\w]+)/edit/$', views.ActivityUpdate.as_view(), name='edit-activity'),
+    url(r'^activities/(?P<slug>[-\w]+)/enrole/$', views.participate, name='enrole-in-activity'),
+]
diff --git a/volunteers/views.py b/volunteers/views.py
index 94b41b7..54e2d2b 100644
--- a/volunteers/views.py
+++ b/volunteers/views.py
@@ -1,11 +1,32 @@
-from django.shortcuts import render
+from django.shortcuts import render, get_object_or_404, redirect
 from django.contrib.sites.shortcuts import get_current_site
 from django.views.generic import CreateView, DetailView, ListView, UpdateView
+from django.contrib.auth.decorators import login_required
 
 from ponyconf.mixins import OnSiteFormMixin
 
 from accounts.mixins import OrgaRequiredMixin, StaffRequiredMixin
 
+from .models import Activity
+from .forms import ActivityForm
+
+
+
+@login_required
+def participate(request, slug=None):
+    if slug:
+        # TODO: enrole action should be done on post (with bootstrap modal confirmation box?)
+        activity = get_object_or_404(Activity, site=get_current_site(request), slug=slug)
+        if request.user in activity.participants.all():
+            activity.participants.remove(request.user)
+        else:
+            activity.participants.add(request.user)
+        activity.save()
+        return redirect('participate-as-volunteer')
+    activities = Activity.objects.filter(site=get_current_site(request))
+    return render(request, 'volunteers/participate.html', {
+        'activities': activities,
+    })
 
 
 class ActivityMixin(object):
@@ -17,17 +38,17 @@ class ActivityFormMixin(OnSiteFormMixin):
     form_class = ActivityForm
 
 
-class ActivityList(StaffRequiredMixin, RoomMixin, ListView):
+class ActivityList(StaffRequiredMixin, ActivityMixin, ListView):
     pass
 
 
-class ActivityCreate(OrgaRequiredMixin, RoomMixin, RoomFormMixin, CreateView):
+class ActivityCreate(OrgaRequiredMixin, ActivityMixin, ActivityFormMixin, CreateView):
     model = Activity
 
 
-class ActivityUpdate(OrgaRequiredMixin, RoomMixin, RoomFormMixin, UpdateView):
+class ActivityUpdate(OrgaRequiredMixin, ActivityMixin, ActivityFormMixin, UpdateView):
     pass
 
 
-class ActivityDetail(StaffRequiredMixin, RoomMixin, DetailView):
+class ActivityDetail(StaffRequiredMixin, ActivityMixin, DetailView):
     pass