Restricting Room Mailbox Bookings to Specific Groups

Occasional Contributor



We have a Room Resource in Exchange Online that we wish to only be book-able to a specific AAD or M365-group. Is that possible and how?


Thank you in advance!


2 Replies
Configure the Calendar processing settings on the mailbox, in particular the -BookInPolicy one. For example:

Set-CalendarProcessing RoomName -BookInPolicy groupname
I set the BookInPolicy on a resource mailbox to a group and it still allows all users to submit booking requests. Is there another setting that impacts this?