I recently thought of another way to do this, though it requires an additional input for each cymbal you want to choke. Still, if you want the simplicity of choking a cymbal with a foot switch, this is going to be the best way to do it I think.
You're going to need:
-trigger io (technically you don't need this but if you already split the inputs in your dm10 you will need it)
-non-latching foot switch
-1/4" trs to ts adapter
http://a.co/0laDk62-1/4" trs cable, long enough to reach your foot switch from the trigger io
-1/4" trs female to dual 1/4" trs male
http://a.co/8xh1rxK (if you're choking 1 or 2 cymbals you don't need this, if you're choking 5 or 6 cymbals you'll need 2 of these, 7 or 8 you'll need 3 etc.)
-1/4" trs splitter cable
http://a.co/0LWh7Pu (only needed for the setup)
1. start off by plugging the trs cable directly into the footswitch.
2. plug the other end of the cable into one of the ends on the trs splitter (red or black, doesn't matter), and plug the splitter into the trigger io.
2a. I do not recommend using port 4 (ride) on the trigger io because you cannot change the trigger type.
3. hit the foot switch, if you saw a light blink on the trigger io then it worked, if not something is wrong.
4. change the midi channel on the trigger io to an unused number, for each cymbal you want to choke you need another unused number, for my 6 cymbals these were 74 to 79.
5. enter these settings:
gain: 15
curve: constant
threshold: 5
x-talk: 1
retrigger: 127
trigger type: SS
6. turn on note chase on the dm10 and hit the footswitch, it should change to the midi channel number you chose on the trigger io
7. copy one of the cymbals you want to choke to this midi number, so for me I want to copy a cymbal I have on Perc2Hd to MIDI #74
8. On (MIDI #74) you want to change the Level to 1 and the Decay to 1, do the same on Layer B if you're using it.
9. Set the mutegroup to 1, and then go back to where the cymbal is (Perc2Hd) and set that mutegroup to 1.
10. Hit the cymbal and then the footswitch, it should choke, if not something is wrong.
11. You have now completed the choke on 1 cymbal. For the second cymbal, unplug the trs cable from the trs splitter and plug it into the other end (if it was in black plug it into red and vise-versa).
12. Repeat steps 3 to 10, keeping everything the same but choosing a new Midi channel number, copying a different cymbal to that number, and choosing a different mutegroup.
13. For cymbal 3, unplug the trs splitter from the trigger io and plug it into a different port, as long as it's not port 4 (ride). It's best to pick one adjacent to the previous port you used. Repeat step 12.
14. Keep repeating these steps until you've exhausted all the cymbals you want to choke, there are 9 mutegroups so you can choke up to 9 cymbals this way.
15. After everything is done, unplug the trs splitter completely (you no longer need this) and plug your trs cable into "1/4 inch trs female to dual 1/4 trs male", plug the male ends into the ports you used on the trigger io (the order doesn't matter) . Since I used 3 ports I have to use 2 of these things and arrange it like this:
16. unplug your trs cable from the foot switch, plug the 1/4" trs to ts adapter in between, like this:
17. test all your cymbals and make sure they choke, if not something is wrong, if you tested each cymbal individually before moving onto the next one then you shouldn't have any problems at this point.
And that's it, hopefully this helps .