Press B, A, B(2), C, B, A, C, B(4) at the options screen.
Press A(2), B(2), C(2), B, C(2), A(2) at the options screen.
In the Match Select, Choose Practice. Now Beat the computer in all the scenarios (playing as both offence or defence). Do this in the 1 player competition mode (all defenders are on the field). Now in friendly mode, Pressing B will bring up a secret menu.