Just a note for me on two commands to quickly modify the AccessRights (permissions) of shared calendars.
Let’s say the calendar in question is not the main calendar but instead a shared calendar called Time Off. You would peek at the permissions for each user by using this command:
Get-MailboxFolderPermission “firstname.lastname@example.org:\calendar\Time Off”
If you want to modify the permissions, you use Set-MailboxFolderPermission -Identity “email@example.com:\calendar\Time Off” -AccessRights Author -User “User2FirstName User2LastName”
That would set User2’s permissions on that calendar to Author.
To Remove permissions, use:
Remove-MailboxFolderPermission -Identity “firstname.lastname@example.org:\calendar\Time Off” -User “User2FirstName User2LastName”