The referee or "sir" as they are called in rugby controls the game and sees that the players maintain good conduct and obey the laws of rugby. There is only one sir and that person is the only judge, timekeeper and score keeper.
There are two touch judges, one appointed by each team. They stand outside the touch line and follow the play. If the ball is kicked out of touch, the touch judge on that side lifts the flag and stands perpendicular to where the ball went out to mark it. The touch judges also determine if a goal kick is successful. The sir still has absolute authority and makes the end decision even if both touch judges disagree.
The team coaches are not allowed to influence the team once they are on the field. Thus a captain is appointed for each team. The captain makes plays, encourages and leads the team. This person is the only means of communication between the team and the sir. Players are not allowed to address the sir unless they are called upon.
Best international tries of the past decade
June 24th - Harborfest 7s at Kennedy Park in Kenosha