diff --git a/admin/admin_ticket.php b/admin/admin_ticket.php
index 287249d5..047a6c6c 100644
--- a/admin/admin_ticket.php
+++ b/admin/admin_ticket.php
@@ -552,7 +552,7 @@ require_once(HESK_PATH . 'inc/headerAdmin.inc.php');
 
 /* List of categories */
 $orderBy = $modsForHesk_settings['category_order_column'];
-$result = hesk_dbQuery("SELECT `id`,`name` FROM `" . hesk_dbEscape($hesk_settings['db_pfix']) . "categories` ORDER BY `" . $orderBy . "` ASC");
+$result = hesk_dbQuery("SELECT `id`,`name` FROM `" . hesk_dbEscape($hesk_settings['db_pfix']) . "categories` WHERE `usage` <> 2 ORDER BY `" . $orderBy . "` ASC");
 $categories_options = '';
 while ($row = hesk_dbFetchAssoc($result)) {
     $selected = '';
diff --git a/admin/calendar.php b/admin/calendar.php
index 48f86006..ab22f04e 100644
--- a/admin/calendar.php
+++ b/admin/calendar.php
@@ -50,7 +50,7 @@ hesk_isLoggedIn();
 define('MFH_CALENDAR', 1);
 
 // Get categories for the dropdown
-$rs = hesk_dbQuery("SELECT `id`, `name`, `color` FROM `" . hesk_dbEscape($hesk_settings['db_pfix']) . "categories` ORDER BY `cat_order`");
+$rs = hesk_dbQuery("SELECT `id`, `name`, `color` FROM `" . hesk_dbEscape($hesk_settings['db_pfix']) . "categories` WHERE `usage` <> 1 ORDER BY `cat_order`");
 $categories = [];
 while ($row = hesk_dbFetchAssoc($rs)) {
     $row['css_style'] = $row['color'] == null ? 'color: black; border: solid 1px #000' : 'background: ' . $row['color'];
diff --git a/admin/manage_categories.php b/admin/manage_categories.php
index af766cf6..1d976d70 100644
--- a/admin/manage_categories.php
+++ b/admin/manage_categories.php
@@ -234,6 +234,7 @@ while ($mycat = hesk_dbFetchAssoc($res)) {
                         <th><?php echo $hesklang['priority']; ?></th>
                         <th><?php echo $hesklang['not']; ?></th>
                         <th><?php echo $hesklang['graph']; ?></th>
+                        <th><?php echo 'Usage'; ?></th>
                         <th><?php echo $hesklang['manager']; ?></th>
                         <th><?php echo $hesklang['opt']; ?></th>
                     </tr>
@@ -261,6 +262,13 @@ while ($mycat = hesk_dbFetchAssoc($res)) {
                     $j = 0;
                     $num = hesk_dbNumRows($res);
 
+                    $usage = array(
+                        0 => '<i class="fa fa-fw fa-ticket icon-link" data-toggle="tooltip" title="Tickets"></i>
+                                <i class="fa fa-fw fa-calendar icon-link" data-toggle="tooltip" title="Events"></i>',
+                        1 => '<i class="fa fa-fw fa-ticket icon-link" data-toggle="tooltip" title="Tickets"></i><i class="fa fa-fw"></i>',
+                        2 => '<i class="fa fa-fw icon-link">&nbsp;</i> <i class="fa fa-fw fa-calendar icon-link" data-toggle="tooltip" title="Events"></i>'
+                    );
+
                     while ($mycat = hesk_dbFetchAssoc($res)) {
                         $j++;
 
@@ -327,6 +335,7 @@ while ($mycat = hesk_dbFetchAssoc($res)) {
                         </div>
                     </div>
                 </td>
+                <td>' . $usage[$mycat['usage']] . '</td>
                 <td>' . get_manager($mycat['manager'], $users) . '</td>
                 <td>
                 <a href="Javascript:void(0)" onclick="Javascript:hesk_window(\'manage_categories.php?a=linkcode&amp;catid=' . $mycat['id'] . '&amp;p=' . $mycat['type'] . '\',\'200\',\'500\')" id="tooltip"><i class="fa fa-code icon-link" style="color: ' . ($mycat['type'] ? 'gray' : 'green') . '" data-toggle="tooltip" data-placement="top" title="' . $hesklang['geco'] . '"></i></a>
diff --git a/admin/new_ticket.php b/admin/new_ticket.php
index d3351af9..ddedc474 100644
--- a/admin/new_ticket.php
+++ b/admin/new_ticket.php
@@ -263,7 +263,7 @@ if (!$show['show']) {
 
             // List categories
             $orderByColumn = $modsForHesk_settings['category_order_column'];
-            $result = hesk_dbQuery('SELECT * FROM `' . hesk_dbEscape($hesk_settings['db_pfix']) . 'categories` ORDER BY `' . $orderByColumn . '` ASC');
+            $result = hesk_dbQuery('SELECT * FROM `' . hesk_dbEscape($hesk_settings['db_pfix']) . 'categories` WHERE `usage` <> 2 ORDER BY `' . $orderByColumn . '` ASC');
             while ($row = hesk_dbFetchAssoc($result)) {
                 if (isset($_SESSION['as_category']) && $_SESSION['as_category'] == $row['id']) {
                     $selected = ' selected="selected"';
diff --git a/index.php b/index.php
index 8bea070f..709c5b97 100644
--- a/index.php
+++ b/index.php
@@ -262,7 +262,7 @@ function print_add_ticket()
                 // Get categories
                 hesk_dbConnect();
                 $orderBy = $modsForHesk_settings['category_order_column'];
-                $res = hesk_dbQuery("SELECT `id`, `name` FROM `" . hesk_dbEscape($hesk_settings['db_pfix']) . "categories` WHERE `type`='0' ORDER BY `" . $orderBy . "` ASC");
+                $res = hesk_dbQuery("SELECT `id`, `name` FROM `" . hesk_dbEscape($hesk_settings['db_pfix']) . "categories` WHERE `type`='0' AND `usage` <> 2 ORDER BY `" . $orderBy . "` ASC");
 
                 if (hesk_dbNumRows($res) == 1) {
                     // Only 1 public category, no need for a select box