Remember, under the Constitution, you can sign twelve players for each seven a side team you have. Players can only play for the team they sign for i.e the Colts team for example. They cannot then be interchanged with the other team, if you have two. They must remain with and play for the team identified on the Master Team Line.
YOU COULD INVALIDATE YOUR INSURANCE IF YOU DO NOT COMPLY WITH THIS RULE.
You can,however, change your squads around by submitting a new Master Team line to Bill Powell as often as you like.

Age twelve teams can, under the Constitution, sign a maximum of twenty two players for eleven a side football.
Age twelve and above players MUST be registered with the SYFA. If in doubt -- ask! Full registration details are on League Documents, download Registration Guidance