Lock main page from new topics.

Posted by jake goldy on Jul 15, 2011; 11:31am
URL: https://support.nabble.com/Lock-main-page-from-new-topics-tp6586621.html

I have a forum located at: http://afl-footy-forum.1057988.n5.nabble.com/ .
I have sub-forums but i dont want users to be able to post on the main 'parent' page. how can i do that. or lock any sub-forum & topic for that matter