If you want to control articulations with keyswitches, you can define a Keyswitch Zone here. The selected range is indicated by an orange line below the keyboard.

If the Keyswitch Zone overlaps with the playable range of your instrument, or if you prefer placing keyswitches beyond the range of an 88-key keyboard (C-2 to G#-1 / C#7 to G8), you can split the zone by defining an additional note in KSEM32 Studio or KSEM Pro 48.

For better orientation, you can display keyswitches directly on the Articulation Pad by activating the fermata button in the top-right corner.