Players set up as shown in the diagram.
The player who makes the first pass, will run around the outside of the circle and back to their original spot.
The rest of the players in the circle will pass the ball around.
If the person running gets around the circle and back to their original spot before the ball gets there they are the winners.
World Rugby has reportedly conceded Aaron Smith's disallowed try in the World Cup final should have stood.
"It is not only useful for staff who are experienced but a valuable tool for those subject staff who have to take teams."
The variety of sessions across sports - sometimes we steal session ideas from one sport and use them with another.