Hi @ Allison Gibb ，
Just want to know how do you check the calendar permissions in outlook?
It is recommended that you check that the calendar permissions in OWA match the results in PowerShell.
When I use the following steps to view calendar permissions in the Outlook client, the results I get are the same as those I get with the Get-MailboxFolderPermission command:
1. Sign in to mailbox and open the calendar.
2. Select the calendar for the current mailbox under My Calendar on the right.
3. Right click this calendar and select Properties.
4. Open the Permissions tab and view who the calendar is currently sharing with.
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