diff --git a/tabellio/contest/configure.zcml b/tabellio/contest/configure.zcml
index bc4855f..d556091 100644
--- a/tabellio/contest/configure.zcml
+++ b/tabellio/contest/configure.zcml
@@ -30,6 +30,13 @@
         permission="tabellio.contest.Manage"
         />
 
+    <browser:view
+        name="manage"
+        for="tabellio.contest.contest.IContest"
+        class=".contest.Manage"
+        permission="tabellio.contest.Manage"
+        />
+
     <browser:view
         name="pick"
         for="tabellio.contest.contest.IContest"
diff --git a/tabellio/contest/contest.py b/tabellio/contest/contest.py
index 1e49260..6d1c856 100644
--- a/tabellio/contest/contest.py
+++ b/tabellio/contest/contest.py
@@ -3,6 +3,8 @@ import random
 
 from five import grok
 from zope import schema
+from Acquisition import aq_inner
+from AccessControl import getSecurityManager
 from Products.Five.browser import BrowserView
 from Products.CMFCore.utils import getToolByName
 
@@ -40,6 +42,10 @@ class View(grok.View):
     def question2answerslist(self):
         return self.context.question2answers.split('\n')
 
+    def can_manage(self):
+        return getSecurityManager().checkPermission('tabellio.contest.Manage',
+                        aq_inner(self.context))
+
 
 class Thanks(grok.View):
     grok.context(IContest)
@@ -102,3 +108,17 @@ class PickWinner(BrowserView):
         self.request.response.redirect('./participants')
 
 
+class Manage(BrowserView):
+    def __call__(self):
+        if self.request.form.get('participants'):
+            self.request.response.redirect('./participants')
+        elif self.request.form.get('close'):
+            self.context.active = False
+            self.request.response.redirect('./')
+        elif self.request.form.get('open'):
+            self.context.active = True
+            self.request.response.redirect('./')
+        elif self.request.form.get('back'):
+            self.request.response.redirect('./')
+
+
diff --git a/tabellio/contest/contest_templates/participants.pt b/tabellio/contest/contest_templates/participants.pt
index 2dd98be..e4a5b84 100644
--- a/tabellio/contest/contest_templates/participants.pt
+++ b/tabellio/contest/contest_templates/participants.pt
@@ -17,6 +17,13 @@
 
         <div tal:replace="structure provider:plone.belowcontenttitle" />
 
+        <p>
+          <form action="@@manage">
+            <input type="submit" name="back"
+                     value="Retourner sur la page du concours"/>
+          </form>
+        </p>
+
         <div tal:replace="structure provider:plone.abovecontentbody" />
 
         <p tal:condition="view/has_winners">
diff --git a/tabellio/contest/contest_templates/view.pt b/tabellio/contest/contest_templates/view.pt
index cdc10c1..3e3c41d 100644
--- a/tabellio/contest/contest_templates/view.pt
+++ b/tabellio/contest/contest_templates/view.pt
@@ -17,6 +17,17 @@
 
         <div tal:replace="structure provider:plone.belowcontenttitle" />
 
+        <div tal:condition="context/active">
+
+          <p tal:condition="view/can_manage">
+            <form action="@@manage">
+              <input type="submit" name="close" value="Fermer le concours"/>
+              <input type="submit" name="participants"
+                     value="Voir la liste des participants"/>
+            </form>
+          </p>
+
+
         <p tal:content="context/intro">
           Lorem ipsum.
         </p>
@@ -50,10 +61,22 @@
           <input type="submit" name="submit" value="Envoyer"/>
 
         </form>
+        </div>
 
 
         <div tal:condition="not:context/active">
-          Ce concours est fermé.
+          <p tal:condition="view/can_manage">
+            <form action="@@manage">
+              <input type="submit" name="open" value="Ouvrir le concours"/>
+              <input type="submit" name="participants"
+                tal:condition="context/objectValues" value="Voir la liste des participants"/>
+            </form>
+          </p>
+
+          <p>
+            Ce concours est fermé.
+          </p>
+
         </div>
 
         <div tal:replace="structure provider:plone.belowcontentbody" />