There are setup and use instructions on their website that are easy to follow.
This can be changed by ctrl + clicking on the icon next to the Keyswitching padlock. Type: Controller - by default MIDI CC 32 is used for UACC Keyswitching. Once complete, go to the Output Menu where the following should be selected. If using a Multi-Timbral Output, the channel should be for the specific MIDI channel you selected.
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