The trailer (4) has the option of setting a downscreen for the weakside wing (3) instead of making himself available for ball reversal

4 downscreens for 3

3 reads the downscreen. He/she may curl, back cut, straight cut (shown) or out cut.

1 passes to 3 coming off downscreen

After the pass, 1 downscreens for 2 and 5 lifts up the lane line to set the second of the staggered screens.

3 has option of scoring off the cut, entering to 4 or looking for 2 coming off the stagger