Captain is voted on each league season.
Captain's Duties:
Make sure warmup is completed 10 minutes before game-time.
After starting 11 are chosen, designate the man setting up the wall, and taking the post on corner kicks.
Coin-toss
Make sure all 11 players do the cool-down at end of game before leaving field of play.
Make sure the alternate captain knows of these duties if the captain is not playing or being subbed.