Forum Discussion
Create bookingStaffMember also requires Add-MailboxPermission
I created an Entra application with the required Graph permissions to manage Bookings scheduling mailboxes so that I could update the staffing for a Bookings page that I'm not a staff member of.
Using that application to request a Microsoft Graph access token, meant I had the required permissions to add a user account (that already had a Bookings license) as an "administrator" (role) for a Bookings page (Bookings business), to replace another person who was the previous Bookings page administrator, but who had since left. I used https://learn.microsoft.com/en-us/graph/api/bookingbusiness-post-staffmembers?view=graph-rest-1.0&tabs=powershell to do this. For the record, I was not able to do this using https://learn.microsoft.com/en-us/powershell/module/microsoft.graph.bookings/new-mgbookingbusinessstaffmember?view=graph-powershell-1.0 using Microsoft.Graph.Bookings module version 2.30.0, presumably because I am not a staff member with the Bookings "administrator" role for that particular Bookings page.
However, the newly added user could not access that Bookings page at https://outlook.office.com/bookings/homepage until a further step had been completed (Error: "You don't have access to this booking page" shows instead).
To ensure the new Bookings page administrator could access the Bookings page, I needed to add mailbox permissions, which I used https://learn.microsoft.com/en-us/powershell/module/exchangepowershell/add-mailboxpermission?view=exchange-ps for.
I found that giving the new Bookings page administrator full access to the scheduling mailbox ensured they could access the Bookings page.
Example using ExchangeOnlineManagement PowerShell module: Add-MailboxPermission -Identity email address removed for privacy reasons -User email address removed for privacy reasons -AccessRights FullAccess
If there is a more efficient way for an system admin to add new staff to a Bookings page, please let me know - otherwise, hopefully this helps someone who gets stuck đ
1 Reply
Youâre right that adding someone as a staff member through Graph doesnât automatically give them access to the scheduling mailbox, which is why they still see the âno accessâ message. Granting Full Access with Add-MailboxPermission definitely solves it, though in many cases giving them Calendar folder permissions is enough if you want to keep access more limited. As long as the user has the right license and you allow a little time for permissions to sync, theyâll be able to open and manage the Bookings page. Your method works well, and using folder-level permissions is just a lighter alternative if you prefer a least-privilege approach.
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