Two teams with substitutes, substitutions are made when a goal is scored.
Each person defends a goal, on each field there are 5 goals, so there are also 5 people who defend these goals.
If a goal is scored in your goal, you have to sit on the sidelines and you become a substitute. A new player (substitute) from the side enters the field and will defend the goal.
If a goal is scored, it is 1 point. The team that has the most points at the end of the game is the winner.