In Quidditch, there are multiple positions you can play as, some of the positions can have more than one person others just one, here are the positions:

1: Seeker (one person)

2: Beater (two people)

3: Keeper (one person)

4: Chaser (three people)

Now for the pitch. The pitch is where the game is played. Keepers guard the goal posts. Beaters hit the bulgers, Seekers look for the snitch and Chasers are in charge of the Quaffle. So that's the pitch see you in the next chapter!