"Allow a forum category to be assigned as a connected forum to a group. Context: A forum category is a special type of forum in BuddyBoss that contains sub-forums but does not itself contain posts. It acts as a grouping feature for forums. I want a group to be connected to several forums. It is currently only possible to connect a full forum that has sub-forums. It is not possible to connect a forum-category that has sub-forums. The result is that the group has to hold fully active parent and sub-forums at the same time