diff --git a/modoboa/extensions/admin/forms/account.py b/modoboa/extensions/admin/forms/account.py
index 98b173940..afaaabe58 100644
--- a/modoboa/extensions/admin/forms/account.py
+++ b/modoboa/extensions/admin/forms/account.py
@@ -151,7 +151,7 @@ class AccountFormMail(forms.Form, DynamicForm):
                 name = "aliases_%d" % cpt
                 self._create_field(forms.EmailField, name, alias.full_address)
                 cpt += 1
-            self.fields["email"].initial = self.mb.full_address            
+            self.fields["email"].initial = self.mb.full_address
             self.fields["quota_act"].initial = self.mb.use_domain_quota
             if not self.mb.use_domain_quota and self.mb.quota:
                 self.fields["quota"].initial = self.mb.quota
diff --git a/modoboa/extensions/radicale/forms.py b/modoboa/extensions/radicale/forms.py
index 89d56d3e4..1e87883a0 100644
--- a/modoboa/extensions/radicale/forms.py
+++ b/modoboa/extensions/radicale/forms.py
@@ -5,7 +5,7 @@ from django import forms
 from django.core.urlresolvers import reverse
 from django.utils.translation import ugettext as _
 from modoboa.lib.webutils import render_to_json_response
-from modoboa.lib.formutils import WizardForm, TabForms
+from modoboa.lib.formutils import WizardForm, TabForms, DynamicForm
 from modoboa.extensions.radicale.models import UserCalendar, SharedCalendar
 
 
@@ -26,8 +26,30 @@ class SharedCalendarForm(forms.ModelForm):
         model = SharedCalendar
 
 
-class RightsForm(forms.Form):
+class RightsForm(forms.Form, DynamicForm):
+    """
+    """
     username = forms.CharField(required=False)
+    read_access = forms.BooleanField(initial=False, label=_("Read"))
+    write_access = forms.BooleanField(initial=False, label=_("Write"))
+
+    def __init__(self, *args, **kwargs):
+        from django.http import QueryDict
+
+        if "instance" in kwargs:
+            self.calendar = kwargs["instance"]
+            del kwargs["instance"]
+        else:
+            self.calendar = None
+        super(RightsForm, self).__init__(*args, **kwargs)
+
+        if args and isinstance(args[0], QueryDict):
+            self._load_from_qdict(args[0], "username", forms.EmailField)
+
+    def _create_field(self, typ, name, value=None, pos=None):
+        """
+        """
+        super(RightsForm, self)._create_field(typ, name, value, pos)
 
 
 class UserCalendarWizard(WizardForm):
@@ -61,10 +83,16 @@ class UserCalendarEditionForm(TabForms):
         self.forms.append({
             "id": "general",
             "title": _("General"),
-            "formtpl": "",
             "cls": UserCalendarForm,
             "mandatory": True
         })
+        self.forms.append({
+            "id": "rights",
+            "title": _("Rights"),
+            "cls": RightsForm,
+            "formtpl": "radicale/rightsform.html",
+            "mandatory": True
+        })
         super(UserCalendarEditionForm, self).__init__(*args, **kwargs)
 
     def extra_context(self, context):
diff --git a/modoboa/extensions/radicale/models.py b/modoboa/extensions/radicale/models.py
index 4521c3538..d42705877 100644
--- a/modoboa/extensions/radicale/models.py
+++ b/modoboa/extensions/radicale/models.py
@@ -108,3 +108,17 @@ class SharedCalendar(Calendar):
     @property
     def type(self):
         return _("shared")
+
+
+@python_2_unicode_compatible
+class AccessRule(models.Model):
+    mailbox = models.ForeignKey("admin.Mailbox")
+    read = models.BooleanField(default=False)
+    write = models.BooleanField(default=False)
+    calendar = models.ForeignKey(UserCalendar)
+
+    def __str__(self):
+        access = "r" if self.read else ""
+        access += "w" if self.write else ""
+        return "%s access rule to %s -> " \
+            % (self.mailbox, self.calendar, access if access else "no access")
diff --git a/modoboa/extensions/radicale/static/radicale/js/jquery.dynamicrule.js b/modoboa/extensions/radicale/static/radicale/js/jquery.dynamicrule.js
new file mode 100644
index 000000000..09e2c42bf
--- /dev/null
+++ b/modoboa/extensions/radicale/static/radicale/js/jquery.dynamicrule.js
@@ -0,0 +1,94 @@
+/**
+ * @module
+ */
+
+(function($) {
+    var DynamicRule = function(element, options) {
+        this.initialize(element, options);
+    };
+
+    DynamicRule.prototype = {
+        constructor: DynamicRule,
+
+        /**
+         * Constructor.
+         */
+        initialize: function(element, options) {
+            this.$element = $(element);
+            this.options = $.extend({}, $.fn.dynamicrule.defaults, options);
+            this.rules_counter = 1;
+
+            $(document).on(
+                "click", "a[class=addrule]", $.proxy(this.add_rule, this)
+            );
+            $(document).on(
+                "click", "a[class=delrule]", $.proxy(this.delete_rule, this)
+            );
+        },
+
+        /**
+         * Reset the current rule to default values.
+         */
+        reset_original_rule: function() {
+            this.$element.find("#id_username").prop("value", "");
+            this.$element.find("#id_read_access").prop("checked", "");
+            this.$element.find("#id_write_access").prop("checked", "");
+        },
+
+        /**
+         * Save the current rule to a new set of elements and reset
+         * the original ones.
+         */
+        add_rule: function(event) {
+            var rulename = $("#id_username").prop("value");
+            
+            event.preventDefault();
+            if (rulename === "") {
+                return;
+            }
+            var $clone = this.$element.clone();
+            var $btn = $clone.find("a");
+
+            $btn.find("i").removeClass("icon-plus").addClass("icon-trash");
+            $btn.removeClass("addrule").addClass("delrule");
+            $clone.find("#id_username")
+                .attr("id", "id_username_" + this.rules_counter);
+            $clone.find("#id_read_access")
+                .attr("id", "id_read_access_" + this.rules_counter);
+            $clone.find("#id_write_access")
+                .attr("id", "id_write_access_" + this.rules_counter);
+            $clone.insertAfter(this.$element);
+            this.rules_counter++;
+            this.reset_original_rule();
+        },
+
+        /**
+         * Delete a given rule.
+         */
+        delete_rule: function(event) {
+            event.preventDefault();
+            var $link = get_target(event, "a");
+
+            $link.parents("tr").remove();
+        }
+    };
+
+    $.fn.dynamicrule = function(method) {
+        return this.each(function() {
+            var $this = $(this),
+                data = $this.data('dynamicrule'),
+                options = typeof method === "object" && method;
+
+            if (!data) {
+                $this.data('dynamicrule', new DynamicRule(this, options));
+            }
+            if (typeof method === "string") {
+                data[method]();
+            }
+        });
+    };
+
+    $.fn.dynamicrule.defaults = {
+    };
+
+})(jQuery);
diff --git a/modoboa/extensions/radicale/static/radicale/js/radicale.js b/modoboa/extensions/radicale/static/radicale/js/radicale.js
index 367f54f9f..4abcc6490 100644
--- a/modoboa/extensions/radicale/static/radicale/js/radicale.js
+++ b/modoboa/extensions/radicale/static/radicale/js/radicale.js
@@ -1,28 +1,62 @@
-var Radicale = function() {
-    this.initialize();
+/**
+ * @module radicale
+ * @desc Utility class for the radicale extension
+ */
+var Radicale = function(options) {
+    Listing.call(this, options);
 };
 
 Radicale.prototype = {
     constructor: Radicale,
 
-    initialize: function() {
+    defaults: {
+        deflocation: "calendars/"
+    },
+
+    initialize: function(options) {
+        Listing.prototype.initialize.call(this, options);
+        this.options = $.extend({}, this.defaults, this.options);
+        this.options.defcallback = $.proxy(this.list_cb, this);
+        this.navobj = new History(this.options);
         $(document).on(
             "click", "a[name=delcalendar]", this.del_calendar
         );
     },
 
+    list_cb: function(data) {
+        $("#listing").html(data.table);
+        this.update_listing(data);
+        $("a.filter").click($.proxy(this.filter_by_tag, this));
+    },
+
+    /**
+     * Refresh the listing.
+     *
+     */
+    reload_listing: function(data) {
+        this.navobj.update(true);
+        if (data) {
+            $("body").notify("success", data, 2000);
+        }
+    },
+
     add_calendar_cb: function() {
         $("#wizard").cwizard({
-            formid: "newcal_form"
+            formid: "newcal_form",
+            success_callback: $.proxy(this.reload_listing, this)
         });
     },
 
+    edit_calendar_cb: function() {
+        $("#original_row").dynamicrule();
+    },
+
     add_shared_calendar_cb: function() {
         $('.submit').on('click', $.proxy(function(e) {
             simple_ajax_form_post(e, {
                 formid: "newsharedcal_form",
-                reload_on_success: false
-                /*success_cb: $.proxy(this.reload_listing, this)*/
+                reload_on_success: false,
+                success_cb: $.proxy(this.reload_listing, this)
             });
         }, this));
     },
@@ -40,8 +74,8 @@ Radicale.prototype = {
         $.ajax({
             url: $link.attr("href"),
             type: "DELETE"
-        }).done(function(data) {
-            $("body").notify("success", data, 2000);
-        });
+        }).done($.proxy(this.reload_listing, this));
     }
 };
+
+Radicale.prototype = $.extend({}, Listing.prototype, Radicale.prototype);
diff --git a/modoboa/extensions/radicale/templates/radicale/calendar_list.html b/modoboa/extensions/radicale/templates/radicale/calendar_list.html
new file mode 100644
index 000000000..294ae5ac2
--- /dev/null
+++ b/modoboa/extensions/radicale/templates/radicale/calendar_list.html
@@ -0,0 +1,23 @@
+{% load i18n lib_tags radicale_tags %}
+<table id="{{ tableid }}" class="table {{ styles }}">
+  <thead>
+    <tr>
+      <th id="name" class="sortable" data-sort_order="identity" width="">{% trans "Name" %}</th>
+      <th id="type">{% trans "Type" %}</th>
+      <th id="url">{% trans "Address" %}</th>
+      <th id="actions" width="">{% trans "Actions" %}</th>
+    </tr>
+  </thead>
+  <tbody>
+    {% for cal in calendars %}
+    <tr id="{{ cal.id }}" class="" name="{{ forloop.counter }}">
+      <td name="name">{% calendar_modify_link cal %}</td>
+      <td name="type">
+        <span class="label label-info"><a href="#" class="filter">{{ cal.type }}</a></span>
+      </td>
+      <td name="url">{{ cal.url }}</td>
+      <td name="actions">{% calendar_actions cal %}</td>
+    </tr>
+    {% endfor %}
+  </tbody>
+</table>
diff --git a/modoboa/extensions/radicale/templates/radicale/calendars.html b/modoboa/extensions/radicale/templates/radicale/calendars.html
index b30b6faad..bc96c752d 100644
--- a/modoboa/extensions/radicale/templates/radicale/calendars.html
+++ b/modoboa/extensions/radicale/templates/radicale/calendars.html
@@ -1,10 +1,14 @@
 {% extends "twocols.html" %}{% load i18n radicale_tags %}
 {% block html_head %}
+<script type="text/javascript" src="{{ STATIC_URL }}js/jquery.sortable.js"></script>
+<script type="text/javascript" src="{{ STATIC_URL }}js/history.js"></script>
 <script type="text/javascript" src="{{ STATIC_URL }}js/creation_wizard.js"></script>
+<script type="text/javascript" src="{{ STATIC_URL }}js/listing.js"></script>
+<script type="text/javascript" src="{{ STATIC_URL }}radicale/js/jquery.dynamicrule.js"></script>
 <script type="text/javascript" src="{{ STATIC_URL }}radicale/js/radicale.js"></script>
 <script type="text/javascript">
 $(document).ready(function() {
-    radicale = new Radicale();
+    radicale = new Radicale({});
 });
 </script>
 {% endblock %}
@@ -18,27 +22,4 @@ $(document).ready(function() {
   </ul>
 </div>
 {% endblock %}
-{% block apparea %}{% load lib_tags %}
-<table id="{{ tableid }}" class="table {{ styles }}">
-  <thead>
-    <tr>
-      <th id="name" class="sortable" data-sort_order="identity" width="">{% trans "Name" %}</th>
-      <th id="type">{% trans "Type" %}</th>
-      <th id="url">{% trans "Address" %}</th>
-      <th id="actions" width="">{% trans "Actions" %}</th>
-    </tr>
-  </thead>
-  <tbody>
-    {% for cal in calendars %}
-    <tr id="{{ cal.id }}" class="" name="{{ forloop.counter }}">
-      <td name="name">{% calendar_modify_link cal %}</td>
-      <td name="type">
-        <span class="label label-info"><a href="#" class="filter">{{ cal.type }}</a></span>
-      </td>
-      <td name="url">{{ cal.url }}</td>
-      <td name="actions">{% calendar_actions cal %}</td>
-    </tr>
-    {% endfor %}
-  </tbody>
-</table>
-{% endblock %}
+{% block apparea %}<div id="listing"></div>{% endblock %}
diff --git a/modoboa/extensions/radicale/templates/radicale/rightsform.html b/modoboa/extensions/radicale/templates/radicale/rightsform.html
new file mode 100644
index 000000000..f4a93d5be
--- /dev/null
+++ b/modoboa/extensions/radicale/templates/radicale/rightsform.html
@@ -0,0 +1,23 @@
+{% load lib_tags %}
+{% if error %}<div class="alert alert-error">{{ error }}</div>{% endif %}
+<form action="{{ action }}" method="POST" id="{{ formid }}">
+  {% csrf_token %}
+  <table class="table table-condensed">
+    <thead>
+      <tr>
+        <th>{{ form.username.label }}</th>
+        <th>{{ form.read_access.label }}</th>
+        <th>{{ form.write_access.label }}</th>
+        <th></th>
+      </tr>
+    </thead>
+    <tbody>
+      <tr id="original_row">
+        <td>{{ form.username }}</td>
+        <td>{{ form.read_access }}</td>
+        <td>{{ form.write_access }}</td>
+        <td><a href="#" class="addrule"><i class="icon-plus"></i></a></td>
+      </tr>
+    </tbody>
+  </table>
+</form>
diff --git a/modoboa/extensions/radicale/templatetags/radicale_tags.py b/modoboa/extensions/radicale/templatetags/radicale_tags.py
index ffae882b4..b6307204a 100644
--- a/modoboa/extensions/radicale/templatetags/radicale_tags.py
+++ b/modoboa/extensions/radicale/templatetags/radicale_tags.py
@@ -51,7 +51,7 @@ def calendar_modify_link(calendar):
         linkdef["url"] = reverse(
             "user_calendar", args=[calendar.pk]
         )
-        #linkdef["modalcb"] = "admin.domainform_cb"
+        linkdef["modalcb"] = "radicale.edit_calendar_cb"
     else:
         linkdef["url"] = reverse(
             "shared_calendar", args=[calendar.pk]
diff --git a/modoboa/extensions/radicale/views.py b/modoboa/extensions/radicale/views.py
index 5ef8dce66..0ddb984e9 100644
--- a/modoboa/extensions/radicale/views.py
+++ b/modoboa/extensions/radicale/views.py
@@ -5,13 +5,14 @@ from itertools import chain
 
 from django.shortcuts import render
 from django.core.urlresolvers import reverse
-from django.http import HttpResponseRedirect
 from django.contrib.auth.decorators import (
     login_required
 )
 from django.utils.translation import ugettext as _
 
-from modoboa.lib.webutils import render_to_json_response
+from modoboa.lib.webutils import (
+    _render_to_string, render_to_json_response
+)
 from modoboa.lib.exceptions import NotFound, PermDeniedException
 from modoboa.extensions.radicale.forms import (
     UserCalendarWizard, SharedCalendarForm, UserCalendarEditionForm
@@ -21,11 +22,13 @@ from modoboa.extensions.radicale.models import UserCalendar, SharedCalendar
 
 @login_required
 def index(request):
-    return HttpResponseRedirect(reverse(calendars))
+    return render(request, "radicale/calendars.html", {
+        "selection": "radicale"
+    })
 
 
 @login_required
-def calendars(request, tplname="radicale/calendars.html"):
+def calendars(request, tplname="radicale/calendar_list.html"):
     if request.user.group == "SimpleUsers":
         cals = UserCalendar.objects.filter(
             mailbox=request.user.mailbox_set.all()[0]
@@ -35,9 +38,10 @@ def calendars(request, tplname="radicale/calendars.html"):
             UserCalendar.objects.get_for_admin(request.user),
             SharedCalendar.objects.get_for_admin(request.user)
         )
-    return render(request, tplname, {
-        "selection": "radicale",
-        "calendars": cals
+    return render_to_json_response({
+        "table": _render_to_string(request, tplname, {
+            "calendars": cals
+        })
     })
 
 
@@ -54,18 +58,12 @@ def user_calendar(request, pk):
         ucal = UserCalendar.objects.get(pk=pk)
     except UserCalendar.DoesNotExist:
         raise NotFound
-    instances = {"general": ucal}
+    instances = {"general": ucal, "rights": None}
     if request.method == "DELETE":
         # Check ownership
         ucal.delete()
         return render_to_json_response(_("Calendar removed"))
     return UserCalendarEditionForm(request, instances=instances).process()
-    # if request.method == "POST":
-    #     pass
-    # form = UserCalendarEditionForm(instances=instances)
-    # return render(request, "common/tabforms.html", {
-    #     "title": ucal.name, "tabs": form
-    # })
 
 
 @login_required
diff --git a/modoboa/lib/formutils.py b/modoboa/lib/formutils.py
index 25a1421fe..aff2409ba 100644
--- a/modoboa/lib/formutils.py
+++ b/modoboa/lib/formutils.py
@@ -159,8 +159,15 @@ class WizardForm(object):
 
 
 class DynamicForm(object):
+    """A form which accepts dynamic fields.
 
+    We consider a field to be dynamic when it can appear multiple
+    times within the same request.
+
+    """
     def _create_field(self, typ, name, value=None, pos=None):
+        """Create a new form field.
+        """
         self.fields[name] = typ(label="", required=False)
         if value is not None:
             self.fields[name].initial = value
@@ -169,6 +176,12 @@ class DynamicForm(object):
             self.fields.keyOrder.insert(pos, name)
 
     def _load_from_qdict(self, qdict, pattern, typ):
+        """Load all instances of a field from a ``QueryDict`` object.
+
+        :param ``QueryDict`` qdict: a QueryDict object
+        :param string pattern: pattern used to find field instances
+        :param typ: a form field class
+        """
         expr = re.compile(r'%s_\d+' % pattern)
         values = []
         for k, v in qdict.iteritems():