One of the joys of PAI is that you don't really need to use AFCAD and TTools.
Yes, it does it automatically, but I mean you don't have to do it yourself.
So if you're doing something with AFCAD and TTools, my guess is you're doing something wrong.
All you've gotta do is download the installer and the liveries you want to see, then run the installer. (Hint: You can install all of your liveries at once.)
After that, you've just gotta go to the cities where those airlines fly. They'll be there.
