User-Control Access to Shared Mailbox

Question

I've created a series of shared mailboxes, and now a lot of people have permission change requests. I want to find a way to empower them (average users) to control permission to their shared mailboxes. For each mailbox, I created a mail-enabled security group that controls permission.

Is there a way for the average user to make changes to a mail-enabled security group for which they are an owner?

I see that there's a place in webmail to review groups that one is a member or owner of, but that seems limited to O365 groups. I see a place in settings to control distribution groups that I own, but I don't see mail-enabled security groups there.

How can I set up owners of these security groups to be able to add/remove members on their own, thereby controlling access to the shared mailboxes?

Thanks.

Answer 1

It should prevent them from being seen yes. That has always been my experience

Also see:
https://support.microsoft.com/en-us/help/2813640/the-owner-of-a-mail-enabled-security-group-in-office-365-can-t-manage

Answer 2

I have the groups marked as hidden in the address list. Would that also hide them from being seen in "distribution groups I own"?