add another check

app/views/resources/_common/_room_search_result.php

@@ -31,7 +31,7 @@
                 ['target' => '_blank']
             );
         } else {
-            if ($room->booking_plan_is_public) {
+            if ($room->booking_plan_is_public && Config::get()->RESOURCES_SHOW_PUBLIC_ROOM_PLANS) {
                 $actions->addLink(
                     $room->getActionLink('booking_plan'),
                     _('Belegungsplan'),