^^^ without some third-party solution, only MIDI sends can be used https://steinberg.help/cubase_pro_artis ... nds_r.html
should set these two params only
also this is how can be sent MIDI data to the VST effects too in the mixerMIDI Send Destination
Allows you to determine to which MIDI output the processed MIDI events are sent.
MIDI Send Channel
Allows you to determine on which MIDI channel the processed MIDI events are sent.
ps. ... and from Artist only ... sad