A passes to B, A sprints to half court and receives ball back from B.
A takes his place near C.
At the same time passes D to C and sprints half court and receives the ball from C.
D takes his place near D.
Passes should be at a low curve, a fast pass as soon as players get the distance.
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.