jih64, I'm not exactly sure we are talking about the same thing. In my instrument list on the Console, I have several choices for keys. I'd like to use a different one than the track has in place, but the track instrument pulldown has only the one that is active.
Aha, now I see what you mean. I added the other synth as a separate track, so now the two are offered as choices. That works, but it's not as simple as a right-click option of changing the synth.