I think monox team should consider adding this feature in monox as it is an important feature in maintaining a forum. It can be very difficult if a website is getting a lot of traffic and site admin has to do this manually from sql database as a lot of users tend to post topics in wrong forum groups / discussion boards.

In groups if i have separate discussion sub-groups and a lot of times user post question in wrong groups / sub-groups

For more information, please see THIS