hi, i'm new and haven't had to try it yet, but once the first game kicks off, can you not quickly leave that game, make changes in your squad screen for the second game, then go back into your first game screen and watch that, knowing your tactics and lineup are already set for the second match?

Surely its just about having proper squad depth. If you are gonna play in all 3 competitions, your lads are gonna get knackered, gonna need 22 players or a boat load of green packs