Attacking team starts with a ball.
Aim of the game is for the attacking team to reach the opposite try line by either using a chip or grubber kick to penetrate the defensive line.
The aim of the defence is to advance in a tight defensive line and prevent the attacking team from scoring.
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.