You should record all parts to different tracks. This helps. There is no “beautiful” way of doing what you are asking. But nonetheless…
In STEP - POLY EDITING (REC OFF) you can go thru your notes (drum parts) by just pressing STEP. Find the part you want to edit.
- Hold REC to select all the corresponding notes. Turn velocity to 0. This will mute your individual part.
- Or press 2nd + pad to mute the note. Tip: Change the zoom level to squeeze everything to a few pads, then you can mute/unmute fast.
I would recommend you to use zoom level to fit everything to one page. Press copy to copy the whole page. Create a new track with the same length and zoom. And press paste. Go back and remove the notes. Do this for all the drum parts and you will be left with all the drum parts on separate tracks. This is the way to go. Simplifies setup by a lot. So if you want to create a different pattern for one drum part, you dont need to have all the other parts in that pattern.
PS. What I would want from the Pyramid is a drum mode for tracks, as explained here: http://squarp.boards.net/thread/768/channel-input-synth-drum-tracks . This would remedy this situation and make the workflow with drum-machines a lot faster.
Hope this helps