Office 365 Shared Mailboxes

#Display Mailbox calendar permissions

Get-MailBoxFolderPermission <Room:\Calendar> | Select FolderName,User,AccessRights

#Show Room Calendar processing rules

Get-Mailbox “<Identity>” | Get-CalendarProcessing | FL

#Set Calendar Permissions

Set-MailBoxFolderPermission “<Room:\Calendar>” –User default –AccessRights PublishingEditor

#Set Room Calendar to auto accept and not prompt for accepting appointments

Set-CalendarProcessing “Executive Room 1” -AllRequestInPolicy $false -RequestInPolicy “All Managers” -RequestOutOfPolicy “Executive Assistants”