Board Thread:Support Requests - Designing Your Wiki/@comment-34258924-20180309042457/@comment-168424-20180309191911

I made it more clear in Help:Forum.

Here's what it now says at the top:
 * Wikis created after November 2016 cannot have Forum enabled. Admins can request to enable the newer conversation feature, Discussions via Special:Contact/general.
 * Wikis that already have Discussions enabled cannot switch to Forum.