changing keys in a midi controller?

[roohlas]

hello im new to eZ, i have a hybrid drum set with a usb midi controller, i want to change double pedal to a double bass drumming with seperate triggers
i use Ddrum DD5XM ELECTRONIC MODULE for 4 toms snare and 1 Bass drum with the triggers and i use mics for the cymbals,
i have all the cymbal slots of my module empty,
is there a way to change a cymbal slot to a 2nd bass drum slot on my ezdrummer interface for a usb midi controller?
thanks

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