TL Metro can be synchronized to the Pro Tools Transport and Tempo using the Link Status selector.
When the Link Status is set to None, the TL Metro can be started and stopped independently of the Pro Tools Transport and Tempo. This is useful for recording when you only need the metronome for a few bars.
When the Link Status is set to Transport, the metronome will start and stop automatically when the Pro Tools Transport is engaged or disenganged.
TL Metro can also be linked to both the Pro Tools Transport and Tempo. In this mode, TL Metro automatically follows the tempo of the Pro Tools session in addition to following the Transport.