Thread:Cokedragon/@comment-6403530-20130308215835/@comment-4848837-20130308220607

Custodian is a user group that can delete and move files, edit protected pages (sysop but not the highest level of protection), have one's own edits marked as patrol (all patrolled edits can be seen here), and move pages without leaving a redirect behind.

Custodian requires 300 mainspace edits as well as having no block record and two months of activity (at least one edit a month).

You can read a bit more here, and when you feel you are responsible and active enough and have met the base requirements, you can request the permission here.