MyBB Community Forums

How would I go about adding an option when creating a forum which you can enter a username. What I would like to do is add an "forum owner" in where admins can specify a username in this field. Also, I'd like to it have it's own variable also... like {$forum_owner} in which this would display the nickname within that particular forum.

You will need to write a plugin or this or request somebody to do so for you. Feel free to open a plugin request at the Plugins Requests forum, or if you opt to give it a try at writing it yourself, feel free to to ask for help in the Plugins Development forum.