Shared Mailbox - best practice / delegation / helpdesk / owner

Hi everyone,

we are searching for "the" solution to manage our shared mailboxes. Although we are trying to get people to use Teams or other "new stuff", but ppl stick with the things they know.

Our (IT) goal is:

After creation of a cloud shared mailbox the "owner" of this mailbox can handle the permission themselves OR each helpdesk user can add users

Automapping is working (no must)

Access reviews are easy to do

Categories / Out of Office can be set by the members of the SMB (which might kill automapping ;))

Anyone accomplished this (or better) and can send us in the right direction?

3rd party tools or PowerAutomate/PowerApp can also be a solution

BR

Stephan