Number of futsal players

Number of players
1. The maximum number of players to start the game: 5, one
    goalkeeper
2. Minimum number of players to end the match: 2
3. The maximum amount of reserve players: 7
4. Limit the number of substitutions: infinite
5. Method change: "change of floating" (all players except the
    goalkeeper may enter and leave the field at any time; replacement
    goalkeeper could only be done if the ball was being played and with
    the approval of the referee)