MPC Program Question???

My question is I'm tryting to make a beat with sounds on different programs. The problem i'm getting is that when I make lets say a bassline with one program then I want a sound on another, but when try that its doesn't pull the sound from that other program.. How can do this???

Thanks in advance

i think what you're trying to say is: you can only use one program at a time, even though you've loaded up more programs. Right?
You'll have to assign the programs. Press shift-6 (i think) and assign them to Drum1-4. Then on the main screen's, highlight 'drum1' on the track you want to use and rotate the jogwheel.
i hope i'm not misundrstanding your question, or stating the obvious.