How do you assign MIDI channels to Garageband?

Here is my goal:

#1 - I choose a multi-timbre VST instrument (say Sample Tank).

One "instance" loads up.

#2 - Load up the VST instrument with sounds/patches. The Sample Tank has about 16 MIDI channels each of which contains an instrument. I save this and it becomes a multi-timbral set of sounds (another type of patch).

#3 - In order to get Garageband to play any other sounds other than the first sound (MIDI channel 1), I need to set my instrument to "transmit" a different MIDI channel (say 2) into the GB track to play that sound that is in the Sample Tank set of sounds.

(A bit confusing)

#4 - Is there any other way of doing this? I was hoping that I could just click on the Garageband track and "assign it to MIDI channel 2" rather then flip around with the transmission stuff.

I know that this discussion is not for beginners but anyone using any VST or other instruments outside of Apple's sound set will run into this.

IN THE OLD DAYS -- I posted a picture to verify I'm old. :-)

I had a MIDI keyboard. I had a Roland D-110 multi-timbral synth module. I would select Patch 21 on the D-110. This is my instrument set ready to go. I would set up a MIDI track in say Master Tracks Pro and set the MTP track to go to whatever instrument I needed on the D-110.

So, I want to replicate this very simple old-way of doing things.

Any tips, suggestions, websites, blogs, or other forums?

Thanks in advance.

One more technical email question and then I'm done.

:-)

John