Assigning Audio Inputs (Audio, Auxiliary Input, and Instrument Tracks)
To assign an audio input of an audio, Auxiliary Input, or Instrument track:
In the Mix or Edit window, click the track’s Input Path selector and choose from the available audio interface channels and busses. Stereo tracks have inputs available as pairs.
The Input Path selector lets you route any audio input or any of the Pro Tools internal busses to an audio, Auxiliary Input, or Instrument track.
Instrument tracks automatically assign the audio output from the instrument plug-in inserted on the track to the track audio Input.