they officiating a badminton game..
coming to the basketball venue!!
Basketball officials are called referees. In the NBA there are three referees assigned to each game. One referee is referred to as the Lead or Head Referee.
The officiating officials in a volleyball game are called referees. The referees stay on the sidelines of the court.
to keep the players safe, call fouls, and keep the game fair
A game of regulation basketball has two officials.
In the professional game, there is a referee - who calls the scores. And each player has a scorer who keeps their score.
As with officials in any game their purpose it to make sure the rules of the game are understood and followed by the players.