Delegate mailbox permissions to a group

[neonetman]

Back when we were using just on-prem Exchange, all of our student mailboxes had access delegated to a "student mailbox access" security group ( so IT and safeguarding staff could easily access their mailboxes if needed). Since we migrated these mailboxes to O365, this permission has disappeared.

 

How can I add back permission for this group as the EAC doesn't seem to allow me to.

[TechMonkey]

Are you looking in the Hybrid Exchange interface or the online one? If the delegation option isn't appearing on the online interface it sounds like the migration hasn't completed fully. I've just checked and we have the delegation option.

[psydii]

We use powershell to delegate to groups. I've found it to be unrealiable. Often (always?) when the membership of the group changes, the delagation needs to be remove and re-added to provide access to the new person.