The PowerShell script to create a new room mailbox has been updated to Version 1.1.
The new release supports adding of a phone number to the room details. Issue #2 is now closed.
Creating a separate security group for calendar booking is still open as issue #1.
You can read the original and up-to-date blog post here: Create a new room mailbox with security groups
- Download the script at Githuib: https://github.com/Apoc70/New-RoomMailbox
- Download and vote at TechNet: https://gallery.technet.microsoft.com/Create-a-new-Room-Mailbox-99a4e477