2.2.1.51 PidNameMeetingDoNotForward Property

Type: PtypBoolean ([MS-OXCDATA] section 2.11.1)

The PidNameMeetingDoNotForward property ([MS-OXPROPS] section 2.459) specifies whether to allow the meeting to be forwarded.
When set to TRUE, the meeting cannot be forwarded by an attendee. Only the organizer can add more attendees to the meeting. When set to FALSE, an attendee can forward the meeting.