Multiple Software Controllers In Logic Pro 8 Options

[Milca]

Hello guys
To make the long story short - I have basicaly 4 controllers
1) M-audio project mix ( using as main mixer)
2) MPD 24 Pad controller ( for drum sampler)
3) M-audio 61keystation - (basically simple keyboard controller)
4) Novation 49Sl Compact - (also keyboard with some extra buttoms)
Anyways when all those controllers are activated in
logic/preferences/control surface they work as one controller.
For example - both keyboards controlling same thing - depending on which keyboard
I play.
What I’m trying to find out if I can assign one keyboard to VST on one track ,second keyboard to another VST on another track and possibly pad controller to third drum track - so for example 3. people can independently play 3. different tracks with their VST-s.
With live instruments it’s a piece of cake - but in this case since all 3. named controllers have USB so I’m not sure how to do it?
I did my research - went through all Logics Enviroment stuff, Even Logic’s 8 Controll surface guide but nothing has really helped me .

If anybody has got experience with this chalenge I would really appreciate your feedback.
Thanks for your time.
Milan