There are roster minimums and maximums for your season, but there are also minimums required to start your match each week.
You can't start your match unless you have the following:
11v11: 7 players. For co-ed, you have to have at least 2 females.
8v8: 5 players. For co-ed, you have to have at least 1 female player.
Once scheduled match time arrives, you must begin the match as soon as you have a legal roster. Failure to field a legal roster by 10 minutes after the scheduled match time will be a forfeit.
For coed matches, being short females does not mean you can exceed the male maximums!