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
Add-MailboxFolderPermission -identity <group>:\Calendar -user <user> -accessrights Editor
When I try to add the user to the calendar as a group mailbox, it gives an error that the groupmailbox switch is invalid
Add-MailboxFolderPermission -identity <group>:\Calendar -user <user> -accessrights Editor -GroupMailbox
Is there any way to add an user, external from the group, to the permission list of the Group Calendar?
