Thread:Project:Support desk/Where do I send requests?/reply (3)

Pages in the MediaWiki namespace (things starting with MediaWiki:) can be created by anyone who is an admin on your wiki. You can get a full list of who those people are by going to special:listadmins on your wiki (the link here is for that page on this wiki, you want the one on your wiki).

If you are an admin on your wiki, you can create pages in the mediawiki namespace just like any other page (by either following a redlink, or typing the page name directly in the url. Special:allmessages has links to all the mediawiki namespace pages on your wiki)