1-connect your other controller
2-start the game(solo campaing)
3-WAIT 30 SECS and press start with your second controller..
4-DONE!! you can play with your friend!!

First connect your other controller,nextwait for the game to start,then press and hold the
start button and when a question comes out press the B button and there it is.

or look in the game manule that comes with it in the case