Place sound beam sensor on stand and place at one end of the row in the middle. Directions One client comes to soundbeam sensor. Person wheels client in beam. When instrument stops it is the end of client's turn. Person chooses one client to come up to S.B. Sensor.
Fiddler plays fiddle tune.
Person wheels client in beam to accompany fiddler. After tune person chooses another client. Each client receives turn. Have the client shake hands on one side of the beam and with the clients on the other side. When the clients shake hands they are cutting through the beam.