There are two efficient ways of working with Pro Tools, both of which use plug-ins found in the AudioSuite>Other menu of Pro Tools.
Quick Mode: for simple operations, uses a temporary Revoice Pro session containing one APT or Doubler process at a time.
Also, a Pro Tools monitor plug-in is included with Revoice Pro that, once installed, allows you to hear audio playback from Revoice Pro through the DAW's audio outputs. It also lets Revoice Pro optionally lock to the DAW's playback with sample-accurate sync. This lets you check processed audio "in place" with DAW audio and video before you transfer it from Revoice Pro back to the DAW.