Playback and Recording : Record Setup : Record Enabling Tracks : Latch Record Enable Buttons Preference

Latch Record Enable Buttons Preference
When the Latch Record Enable Buttons option is selected in the Operation Preferences, you can record enable additional audio tracks by clicking their Record Enable buttons. Previously record-enabled tracks remain enabled. The Latch Record Enable Buttons option affects audio tracks only.
When the Latch Record Enable Buttons option is deselected, record enabling a subsequent audio track disables the previously record-enabled audio track.
To enable the Latch Record Enable Buttons preference:
1 Choose Setup > Preferences and click the Operation tab.
2 Select Latch Record Enable Buttons.