To switch players on Defense, press X.
To switch to your goalie, hold down X.
To Hip Check, hold Circle and D-pad Left or Right while skating backwards.
To Shoulder Check, hold Circle and D-pad Left or Right.
To use Icon Switching, hold down L2 and press either X, Square, Circle, Triangle, or R2.
To change defensive strategies, press L1.
To assign Icons, press L2.
To change lines, press R2.
While manually controlling your goalie, press Square to have your goalie make a save.