Restricting Room Mailbox Bookings to Specific Groups

[ymmas]

Hi,

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!

Ymmas

[#2]

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

Set-CalendarProcessing RoomName -BookInPolicy groupname
https://docs.microsoft.com/en-us/powershell/module/exchange/set-calendarprocessing?view=exchange-ps

[#3]

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?