Single section control with 2.4 AIO

Been a while since I looked closely at AOG. Looking at implementing an AIO2.4 board to provide lightbar and auto shutoff on a 12V 100L slipon spray pack.

Is there a free output pin I can use to drive a relay as a poor mans sectional control?

I think the work switch pin is an input, generally used for recording when an implement is in the ground.

Cheers,
Pete