2.2.7.63 PidLidRequiredAttendees
DAV property name: http://schemas.microsoft.com/mapi/required_attendees
Data type: PtypString ([MS-OXCDATA] section 2.11.1.6)
The PidLidRequiredAttendees property ([MS-OXPROPS] section 2.229) gets or sets the required attendees for the appointment or meeting.<5>