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Hi @Glenn Maxwell
Thank you for reaching out with your question via the Microsoft Q&A forum.
To add new users to the existing booking policy for your room mailbox without affecting the current allowed users, please follow these steps:
Retrieve the current list of users allowed to book the room:
$existing = (Get-CalendarProcessing -Identity "******@yourdomain.com").BookInPolicy
Add the new users to this list:
$updated = $existing + "******@yourdomain.com", "******@yourdomain.com"
Update the booking policy with the combined list:
Set-CalendarProcessing -Identity "******@yourdomain.com" -BookInPolicy $updated
This will preserve all existing users while adding the new ones.
To verify the users currently allowed to book the room and see their email addresses, run the following:
$bookInPolicyDNs = (Get-CalendarProcessing -Identity "******@yourdomain.com").BookInPolicy
foreach ($dn in $bookInPolicyDNs) {
$user = Get-Recipient -Identity $dn
$user.PrimarySmtpAddress
}
This will display the email addresses of the users in the booking policy, making it easier to confirm who has access.
If this doesn’t work as expected or if you need to make further adjustments, feel free to reply here and I’ll be happy to assist you.
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