Contributor: Provides the ability to view free/busy information and create new events.Events set to private will only display as Private Appointment. Free/Busy time, subject, location: Allows someone to view your Subject and Location.Free/Busy time: Allows someone to view blocks of time as Free, Busy, Tentative, Away.None: User will be unable to view any information (including free/busy times). Permissions in the Outlook Desktop Client