diff --git a/openslides/participant/forms.py b/openslides/participant/forms.py
index a6245e94c..d420ba55f 100644
--- a/openslides/participant/forms.py
+++ b/openslides/participant/forms.py
@@ -47,14 +47,39 @@ class GroupForm(forms.ModelForm, CssClassMixin):
     permissions = LocalizedModelMultipleChoiceField(
         queryset=Permission.objects.all(), label=_("Persmissions"),
         required=False)
+    users = forms.ModelMultipleChoiceField(
+        queryset=OpenSlidesUser.objects.all(),
+        label=_("Users"), required=False)
 
     def __init__(self, *args, **kwargs):
-        super(GroupForm, self).__init__(*args, **kwargs)
+        # Initial users
         if kwargs.get('instance', None) is not None:
-            self.fields['permissions'].initial = (
-                [p.pk for p in kwargs['instance'].permissions.all()])
+            initial = kwargs.setdefault('initial', {})
+            initial['users'] = [user.pk for user in kwargs['instance'].user_set.all()]
+
+        super(GroupForm, self).__init__(*args, **kwargs)
+
+    def save(self, commit=True):
+        instance = forms.ModelForm.save(self, False)
+
+        old_save_m2m = self.save_m2m
+        def save_m2m():
+           old_save_m2m()
+
+           instance.user_set.clear()
+           for user in self.cleaned_data['users']:
+               instance.user_set.add(user)
+        self.save_m2m = save_m2m
+
+        if commit:
+            instance.save()
+            self.save_m2m()
+
+        return instance
 
     def clean_name(self):
+        # Do not allow to change the name "anonymous" or give another group
+        # this name
         data = self.cleaned_data['name']
         if self.instance.name.lower() == 'anonymous':
             # Editing the anonymous-user
diff --git a/openslides/participant/models.py b/openslides/participant/models.py
index 3bc597ad8..8924d4d4b 100644
--- a/openslides/participant/models.py
+++ b/openslides/participant/models.py
@@ -90,9 +90,10 @@ class OpenSlidesUser(User, PersonMixin):
             return ('user_delete', [str(self.id)])
 
     def __unicode__(self):
+        name = self.get_full_name() or _("No Name yet")
         if self.name_surfix:
-            return u"%s (%s)" % (self.get_full_name(), self.name_surfix)
-        return u"%s" % self.get_full_name()
+            return u"%s (%s)" % (name, self.name_surfix)
+        return u"%s" % name
 
     class Meta:
         # Rename permissions
diff --git a/openslides/participant/views.py b/openslides/participant/views.py
index 67684ba58..67b854ff5 100644
--- a/openslides/participant/views.py
+++ b/openslides/participant/views.py
@@ -357,16 +357,7 @@ class GroupOverviewView(ListView):
     model = OpenSlidesGroup
 
 
-class GroupEditMixin(object):
-    """
-    Methodes for the GroupCreateView and GroupUpdateView.
-    """
-    def get_form_class(self):
-        delete_default_permissions()
-        return self.form_class
-
-
-class GroupCreateView(CreateView, GroupEditMixin):
+class GroupCreateView(CreateView):
     """
     Create a new group.
     """
@@ -378,8 +369,12 @@ class GroupCreateView(CreateView, GroupEditMixin):
     success_url = 'user_group_overview'
     apply_url = 'user_group_edit'
 
+    def get(self, request, *args, **kwargs):
+        delete_default_permissions()
+        return super(GroupCreateView, self).get(request, *args, **kwargs)
 
-class GroupUpdateView(UpdateView, GroupEditMixin):
+
+class GroupUpdateView(UpdateView):
     """
     Update an existing group.
     """
@@ -391,6 +386,10 @@ class GroupUpdateView(UpdateView, GroupEditMixin):
     success_url = 'user_group_overview'
     apply_url = 'user_group_edit'
 
+    def get(self, request, *args, **kwargs):
+        delete_default_permissions()
+        return super(GroupUpdateView, self).get(request, *args, **kwargs)
+
 
 class GroupDeleteView(DeleteView):
     """