SDJ-4000: How do I adjust the beat grid for a track?

On the Gemini Sound SDJ-4000, you tell the player which deck you want to edit by giving that deck focus. Once a deck has focus, your BPM and beat grid controls affect that deck.

To adjust the grid on the track loaded in Deck 1, press and hold a shift button and press the Load 1 button. Deck 1 now has focus, so your BPM and grid editing controls will affect Deck 1.

To adjust the grid on Deck 2 instead, press and hold shift and press the Load 2 button. That gives Deck 2 focus for editing the beat grid or BPM.