Board Thread:Support Requests - Getting Technical/@comment-5012038-20130614011930/@comment-452-20130614233049

If your board is named "Board:Archived_Posts", then one way to do it would be to hide that box altogether, which you can do by putting this: .page-Board_Archived_Posts #ForumNewMessage { display: none; } in Mediawiki:Common.css

However, you may get in trouble for doing that, because it will technically "obstruct the proper functioning and view of [...] user interface". Same goes for leaving it visible but disabling it.

Wikia staff have said in the past that even if a certain feature is not allowed under local wiki policy, you're not permitted to restrict access to it.
 * For instance, some wikis forbid people from deleting their own messages, so they may want to hide "Remove" from the menu. Wikia staff have specifically said that doing this is not allowed, and that you must instead just create a wiki policy, and if anyone does it, warn them.

So, I can think of two things which you are allowed to do:
 * Edit the description at the top of the board using Special:Forum?action=editmode
 * Use javascript to put a *big* message at the top of the board.

Here's an example: http://tardis.wikia.com/wiki/Special:Forum

And this is how it's done: forumnote.js - this is for the forum index, but it can be adapted to only display at the top of a single forum.

I'm not sure of your skill level, so I won't give you step by step instructions at this point.

If you need help setting this up, let me know!