VST Instruments "Rack"

I’ve been doing some time in C9 and noticed that Instrument Track and Rack based instruments are now available under “VST Instruments”, with both allowing multiple outputs to be selected.

I have some older projects where I quickly created instrument tracks that were only in stereo but with this new option I’m wondering if there is a way to enable multiple outputs for instrument tracks since right clicking Output: in the Inspector only yields a single stereo output at any one time.