Two. Recent arrivals from the machine and then have to wait for orders from the command rm that the board is on the board then. Will need to declare the passengers on the plane.
2. when the incoming passengers from all machines, and then must wait to hear commands from Rm whether to order Board at any Board order. Need to get flight passenger announcements.
2. When the Arrivals from the end, and be waiting to hear from Rm command that will be sent when Board Board, it must be in order to get Passengers on an airplane