Hold down the shift key, and the 13 (Utility) key. The first screen that will appear is for what 'part' to play. The choices are ALL, DRUM, BASS. So if you want both, use the jog dial to select ALL etc. Use the jog dial to go through the choices. To select just drum, set it to drum. The enter key will take you to other options that you can also use the jog dial to control.
Hope that helps.
Steve
