Your Club Booster V2 is paired with the remote at the factory. However, if your remote and Club Booster are not communicating, it is possible to pair them.
Pairing the devices:
Step 1 - Power off the Club Booster.
Step 2 - Press and hold "Stop" and "30" button on the remote. The upper left LED starts to blink.
Step 3 - Power on the Club Booster. The upper left LED on your remote turns solid.