According to the training session objective the coach will change field dimension and will influence the game start (eg. for developing the use of the space he could let start some defenders out of the field or lyed down).
Is very important for the coach to have two balls, therefore he can move the game out of the bunches and let the players understand how important is space (most beginners are infact attracted by the ball only).
The game has to be pretty fast but it's important to stop it (rarelly) when there are some repeted and crucial errors.
It's also important to give continuous feedback (more positive than negative) to the players to help them into decision making.
Create a resolution to develop your coaching confidence by seizing the opportunity to discover new drills, turn ideas into action and seek advice from the coaching community.
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."