I think you're confused about how tape works on analog recording. The tape machine is the multi-track recording medium. So let's say I'm recording a band and I have a 24 track tape machine, I'd record each individual "channel/microphone/DI" part onto it's own track. The tape itself is where these tracks are stored, and played back from.
Then, there's the mixdown...once you have your mix setup, you're going to route the stereo mixdown to a separate tape machine, usually a 2-track mixdown or mastering machine.
So for VTM, you'd probably want to use the 16-track model on individual tracks and the 2-track on the stereo output. On the tracks, you could put VCC after the tape plugin, and the master output bus, you could put VCC before VTM. Really though, there are no rules and you should do what sounds best to you.