Hi! I've got a PC, not a MAC, but on my PC if you click on a track, press CTRL - which I guess on a Mac would be the button with the curly-cornered square on it, dunno what it's called, sorry - and drag the track down, it duplicates the track. All you have to do is change the VST on the duplicated track.....
My problem is, and why I'm here, I can't find ANYTHING that says 'add VST to track!' As I only use VSTs, this means I now have a DAW that doesn't seem to want to add instruments to anything!!
Chris.