Board Thread:Support Requests - Community Management/@comment-10532672-20130607194602/@comment-10688548-20130607200701

You, the end user cannot edit groups. If you contact Staff via c:minecraft-and-redstone:Special:Contact/general, they have the option of modifying the rights of the various usergroups.

However the Creation Policy states that "Wikis are about working together, and all Wikia projects are open to the public to edit. There is no option to restrict editing to the founder or to a particular group." and this includes page creation: they are very unlikely to turn down your request.

Realize that it's most likely going to be unnecessary: duplicate pages do occur, but they honestly are unlikely to occur often, and even when they do they are very easily deleted/redirected. You're overblowing the problem- the changes you're asking about won't be necessary.