Topic on Project:Support desk

Hi, I have two questions:

1. Is it possible to protect a page with a level beyond sysop. For example, instead of edit for sysops, edit for bureaucrats. If so, how?
2. I've seen that some wikis have something called checkuser-limited that allows to check only our own IPs. I'd like to know how to enable it.

Thank you.

For your first query, yes it is possible, see Manual:$wgRestrictionLevels.

Regarding "checkuser-limited", can't say for sure but judging from its presence on MythTV Official Wiki and Wikifashion, it was probably a feature for an older version of Extension:CheckUser (v2.3), which has now been removed.