Playback and Recording : Punch Recording Modes : Using TrackPunch : Punching In on Multiple Tracks Simultaneously

Punching In on Multiple Tracks Simultaneously
To punch in on multiple tracks simultaneously:
1 Enable TrackPunch mode.
2 Click the Record Enable button on each track you want to punch in, so that the track is both TrackPunch- and Record-enabled. The track’s Record Enable button flashes blue and red.
3 Do either of the following:
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During playback, click Record in the Transport to punch in and out on all TrackPunch-enabled tracks simultaneously.
– or – 
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Click Record in the Transport first, then Option-Shift-click (Mac) or Alt-Shift-click (Windows) a track’s Record Enable button to simultaneously punch in and out on all currently selected TrackPunch enabled tracks.
4 Stop playback. When you are finished with the record pass, track Record Enable status and transport Record Arm status follow the current Audio Track RecordLock and Transport RecordLock preference settings.