Can't Figure Out More Triggers Ratcheting

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I'm attempting to set up a rhythm and have one particular trigger randomly ratchet.  I want it to trigger normally, and then have it do random ratchets.  

I had this set up just fine before I bought the More Triggers 16, but after adding it, I can't figure out what to do.

Thanks in advance.  (I used the search and wasn't able to find what I was looking for.)