Board Thread:Support Requests - Designing Your Wikia/@comment-4295751-20140212220725/@comment-366087-20140215012611

What I do after an admin has been inactive for 4 months (twice what it takes to adopt) is to remove all their status (except for b'crat of course) with a note to see me when they return. This is mainly so editors know who not to try to seek help from.

BTW, Admins have "Chat Mod" and "Rollback" privileges already. Making them part of the group (promoting) is only for the Tags.