Manage Participants

[[addParticipant]] - add a participant [[removeParticipant]] - remove a particpant [[promoteParticipant]] - Make a participant admin [[demoteParticipant]] - remove participant as admin

...
  client.addParticipant('XXXXXXX-YYYYYY@c.us','ZZZZZZZZZ@c.us')
  client.removeParticipant('XXXXXXX-YYYYYY@c.us','ZZZZZZZZZ@c.us')
  client.promoteParticipant('XXXXXXX-YYYYYY@c.us','ZZZZZZZZZ@c.us')
  client.demoteParticipant('XXXXXXX-YYYYYY@c.us','ZZZZZZZZZ@c.us')
...