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Option 1: Impersonation (to be executed once), replace "roomz-manager" with the name of your ROOMZ user

New-ManagementScope -Name "RoomzScope" -RecipientRestrictionFilter {RecipientTypeDetails -eq "RoomMailbox"}
New-ManagementRoleAssignment -Role ApplicationImpersonation -User roomz-manager -CustomRecipientWriteScope "RoomzScope"

Option 2: Full Access Rights (to be executed for all meeting rooms), replace "roomz-manager" with the name of your ROOMZ user and "my-room" with the name of your meeting room

Add-MailBoxPermission my-room -User roomz-manager -AccessRights FullAccess -InheritanceType All

Outgoing IP address

The outgoing IP address used in order to communicate with the booking systems is the following : 13.80.100.184

If your IT infrastructure requires it, make sure to allow this IP address to communicate with your booking system.

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The following command allows applying the parameter to all rooms :

Get-Mailbox| where {$_.RecipientTypeDetails -eq "RoomMailbox"} | Set-CalendarProcessing -AddOrganizerToSubject $false -DeleteSubject $false -RemovePrivateProperty $false

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