The practice should be setup as shown. Have one player as a wicket keeper and another as fielder.
The bowlers take it in turns to bowl, with the fielder calling if the ball was a good line (pitched in the cones) or a good length (pitched level with the red hoop).
If the ball pitches in the hoop then the ball is both a good line and length.
Focus on the target - the more focused the bowler is, the more likely they are to hit the target.
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.