Substitutions can only be made at the end of each quarter. The exception to this is if a player is injured during the game, in which case a replacement can be brought on as soon as there is a stoppage in play. There is no limit to the number of substitutions that a team can make.

If you start a match with less than 7 players and more members of your team arrive after the game has started, they must wait until the next centre pass before being allowed to join the game.