Every PM particular admin sends includes "handle membership request" link

I have a site where one particular admin (not mine or this user’s other admin account) for every PM includes a “handle membership request” link. It links to https://www.forum.com/g/everyone/requests?filter=admin_username

Obviously, there are no membership requests for “everyone”.

I’ve looked in the membership model (whose exact name I don’t remember).

Any ideas?