The last method you suggested (opening multichannel VST’s) works okay, but it does not seem to permit running more than one Cabbage multichannel VST at a time. If I try to duplicate the template VST you sent me; rename it and input new Csound code to try and make a second VST, afterwards, only the original VST shows up within the DAW.
I assume this is the link to the thread on that beta version here?