If its a stock Superstock, you have a worrframe. The modes are changed by a jumper inside the grip frame. Some of them are labeled which is which, some arent. Open up the grips and look.
If its a superstock with an eblade frame w an eclipse board of some sort you will have to open grips and press the red button. The red button will open firing mode menu, then change the modes with the buttons on the back of the board.