Add admin option see BT#12620

plugin/bbb/lib/bbb.lib.php

@@ -1504,6 +1504,10 @@ class bbb
                 'global_conference_allow_roles'
             );
 
+            if (api_is_platform_admin()) {
+                $userInfo['status'] = PLATFORM_ADMIN;
+            }
+
             $showGlobalLink = true;
             if (!empty($allowedRoles)) {
                 if (!in_array($userInfo['status'], $allowedRoles)) {

plugin/bbb/lib/bbb_plugin.class.php

@@ -48,6 +48,7 @@ class BBBPlugin extends Plugin
                 'global_conference_allow_roles' => [
                     'type' => 'select',
                     'options' => [
+                        PLATFORM_ADMIN => get_lang('Administrator'),
                         COURSEMANAGER => get_lang('Teacher'),
                         STUDENT => get_lang('Student'),
                         STUDENT_BOSS => get_lang('StudentBoss')