Player 1 inbounds the ball to Player 2.
Player 1 moves to the side where Player 2 was, while Player 2 moves towards the centre line.
Player 2 crosses behind Player 3 who is crossing the court from the other direction, passing the ball near where they cross.
Player 3 crosses behind Player 1 who is now crossing the court from the other direction.
The ball SHOULD effectively travel up the court near the centre line while the players are alternating sides.
The diagram below should help clarify.