Finale used to do a thing where the Baroque Human Playback style would roll all chords of any staff named “Continuo”. 
I’m wondering if I can achieve a similar thing, getting it to arpeggiate a harpsichord, without having to manually add an arpeggio onto every chord.
There is an “Arpeggio Up” playback Technique, but it doesn’t seem to trigger the effect when I use it in a Playing Technique.