Board Thread:Support Requests - Getting Technical/@comment-24396332-20140315021252/@comment-16101931-20140317040840

You can't customize the forum itself using any kind of wikitext, though depending on what you want, it could possibly be done using CSS or Javascript. It just depends.

The help page you linked lists things like how to add subforums, change forum names, add icons, etc. There's really no way for you to do what you said in your second post ("i would like it to have a reply box, show the user who replied, etc. Something like in this forum.") until your adoption request is granted (which it should be, judging by your contributions to that wiki).

My suggestion would be to just wait it out (and don't pester Wikia staff about the request either, not saying that you would though).