When you right-click a track and select a port that is for playback. That selection is not for input.
Try recording with them all enabled; you'll get all the tracks recorded. Don't even need to record anything to prove it. Just hit the dang recording button and keep take. You'll see it happen.
To make it easy to see, highlite a track to record on that has a bunch of empty tracks below it. Input one will go to the first track (so will input 2 if a stereo track is recorded to)
Then each input (from top to bottom in the drivers list) will go the next available blank track.


Make your sound your own!
.. I do not work here, but the benefits are still awesome