dunno whether i got your question fully
but i guess there are several ways - for example program change - continue on same track with different program/sounds, or you could copy your notes to track 2 assign a different part and program and place another program/sound there.
or to work on on same program you could set track type to inst. then you could move notes up or downwards the grid (well ... its the pianoroll actually), ... and it can become a mess with those notenumbers ... but move note plus hitting the pad is ok
on inst tracks you can move time and note, which is great, on drum tracks time only ... would be nice to be able to move notes up and down on drum type tracks aswell imo ... that pianoroll looks to weird when workin on drumpgms ... currently there is a workaround - you can change track to inst and move up and down - once moved your notes you can come back to drum trrack and you ll see everythin on the drumgrid again ...
hope one of those is doin the job for you ...