I was referencing the operations manual and reviewed this section. If you’ve not yet tried this, get to know it, it’s a great feature of Cubase.
Assigning Chord Events to HALion Sonic SE Pads
You can assign up to eight chords from the chord track to the eight Halion Sonic SE pads in one move.
Select Chords on the Chord Track, drag to the pads! The chords are assigned, in order, to each pad.
Here’s a screenshot to make it clearer. Cheers.