I have a client that has a M365/Teams group that handles sensitive information. They want their secretary to have editor access to the Calendar in that group without being a member of the group. I have tried to do this through PowerShell unsuccessfully.
When I try to add a user to the calendar as a normal mailbox, it gives an error stating the mailbox does not exist
Yes, the switch no longer seems to function. It did so in the past, I even wrote a short blog article with examples, but alas things change in the cloud. The way to control Calendar access currently seems to be by adjusting the members/owners list as needed.