In 3s or 4s one closer player puts a name on the ball and the other fielder backs up behind.
Player who made the call decides either long barrier or short pick up to get the ball in quickly
The two players communicate, make a decision who is to go to the ball and the other backs up
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.