No, but a firmly worded note in the meeting may make a difference.

--�
Milly Staples [MVP - Outlook]

Post all replies to the group to keep the discussion intact. All
unsolicited mail sent to my personal account will be deleted without
reading.

After furious head scratching, MarshaMarsha asked:

| Can meeting organizer prevent attendees from adding more people to a
| meeting that has been initiated by the meeting organizer?