diff --git a/openslides/core/static/css/app.css b/openslides/core/static/css/app.css
index 27ac93096..f6d2974d4 100644
--- a/openslides/core/static/css/app.css
+++ b/openslides/core/static/css/app.css
@@ -578,6 +578,14 @@ img {
     margin-right: 5px;
 }
 
+.lead-div {
+    margin-bottom: 20px;
+}
+
+.lead-div .lead {
+    margin-bottom: 0;
+}
+
 .italic {
     font-style: italic;
 }
diff --git a/openslides/motions/static/js/motions/base.js b/openslides/motions/static/js/motions/base.js
index 174cf9df1..69d7b8c1d 100644
--- a/openslides/motions/static/js/motions/base.js
+++ b/openslides/motions/static/js/motions/base.js
@@ -273,6 +273,21 @@ angular.module('OpenSlidesApp.motions', ['OpenSlidesApp.users'])
     }
 ])
 
+.factory('MotionList', [
+    function () {
+        return {
+            getList: function (items){
+                var list = [];
+                _.each(items, function (item) {
+                    list.push({ id: item.id,
+                                item: item });
+                });
+                return list;
+            }
+        };
+    }
+])
+
 .run([
     'Motion',
     'Category',
diff --git a/openslides/motions/static/js/motions/site.js b/openslides/motions/static/js/motions/site.js
index 8f4b0eaf0..c9ace08fb 100644
--- a/openslides/motions/static/js/motions/site.js
+++ b/openslides/motions/static/js/motions/site.js
@@ -153,6 +153,19 @@ angular.module('OpenSlidesApp.motions.site', ['OpenSlidesApp.motions'])
                 views: {
                     '@motions.category': {}
                 }
+            })
+            .state('motions.category.sort', {
+                url: '/sort/{id}',
+                resolve: {
+                    category: function(Category, $stateParams) {
+                        return Category.find($stateParams.id);
+                    },
+                    motions: function(Motion) {
+                        return Motion.findAll();
+                    }
+                },
+                controller: 'CategorySortCtrl',
+                templateUrl: 'static/templates/motions/category-sort.html'
             });
     }
 ])
@@ -1065,6 +1078,52 @@ angular.module('OpenSlidesApp.motions.site', ['OpenSlidesApp.motions'])
     }
 ])
 
+.controller('CategorySortCtrl', [
+    '$scope',
+    '$stateParams',
+    '$http',
+    'MotionList',
+    'Category',
+    'category',
+    'Motion',
+    'motions',
+    function($scope, $stateParams, $http, MotionList, Category, category, Motion, motions) {
+        Category.bindOne(category.id, $scope, 'category');
+        Motion.bindAll({}, $scope, 'motions');
+        $scope.filter = { category_id: category.id,
+                          orderBy: 'identifier' };
+
+        $scope.$watch(
+            function () {
+                return Motion.lastModified();
+            },
+            function () {
+                $scope.items = MotionList.getTree(Motion.filter($scope.filter));
+            }
+        );
+
+        $scope.alert = {};
+        // Numbers all motions in this category by the given order in $scope.items
+        $scope.numbering = function () {
+            // Create a list of all motion ids in the current order.
+            var sorted_motions = [];
+            $scope.items.forEach(function (item) {
+                sorted_motions.push(item.item.id);
+            });
+
+            // renumber them
+            $http.post('/rest/motions/category/' + $scope.category.id + '/numbering/',
+                {'motions': sorted_motions} )
+            .success(function(data) {
+                $scope.alert = { type: 'success', msg: data.detail, show: true };
+            })
+            .error(function(data) {
+                $scope.alert = { type: 'danger', msg: data.detail, show: true };
+            });
+        };
+    }
+])
+
 //mark all motions config strings for translation in javascript
 .config([
     'gettext',
diff --git a/openslides/motions/static/templates/motions/category-list.html b/openslides/motions/static/templates/motions/category-list.html
index 0b56b67ad..d9774e1ee 100644
--- a/openslides/motions/static/templates/motions/category-list.html
+++ b/openslides/motions/static/templates/motions/category-list.html
@@ -40,6 +40,8 @@
         <td ng-mouseover="category.hover=true" ng-mouseleave="category.hover=false">
           <strong>{{ category.name }}</strong>
           <div class="hoverActions" ng-class="{'hiddenDiv': !category.hover}">
+            <!-- sort -->
+            <a ui-sref="motions.category.sort({ id: category.id })" translate>Sort</a> |
             <!-- edit -->
             <a ui-sref="motions.category.detail.update({id: category.id })" translate>Edit</a> |
             <!-- delete -->
diff --git a/openslides/motions/static/templates/motions/category-sort.html b/openslides/motions/static/templates/motions/category-sort.html
new file mode 100644
index 000000000..c4cdc5e2f
--- /dev/null
+++ b/openslides/motions/static/templates/motions/category-sort.html
@@ -0,0 +1,34 @@
+<div class="header">
+  <div class="title">
+    <div class="submenu">
+      <a ui-sref="motions.category.list" class="btn btn-sm btn-default">
+        <i class="fa fa-angle-double-left fa-lg"></i>
+        <translate>Back to categories</translate>
+      </a>
+    </div>
+    <h1><translate>Category</translate> {{ category.name }}</h1>
+  </div>
+</div>
+
+<div class="details">
+  <div class="lead-div">
+    <p class="lead" translate>
+      Drag and drop motions to reorder the category and when finished, renumber them.
+    </p>
+    <a os-perms="motions.can_manage" class="btn btn-primary btn-sm" ng-click="numbering()">
+      <i class="fa fa-sort-numeric-asc fa-lg"></i>
+      <translate>Numbering</translate>
+    </a>
+  </div>
+  <uib-alert ng-show="alert.show" type="{{ alert.type }}" ng-click="alert={}" close="alert={}">
+    {{ alert.msg }}
+  </uib-alert>
+  <div ui-tree="treeOptions" data-max-depth="1" data-empty-placeholder-enabled="false">
+    <ol ui-tree-nodes ng-model="items">
+      <li ui-tree-node ng-repeat="item in items">
+        <div ui-tree-handle bg-color="#FF0000">
+            {{ item.item.identifier }}: {{ item.item.getTitle() }}
+        </div>
+    </ol>
+  </div>
+</div>