Auto,
It is impossible to tell for sure based upon the limited info you supplied and the one pic.
But, generally pools have three modes..
Pool mode... where water is sucked from the Pool, through the Intake valve and back through the Return valve to the Pool..
Spa mode... where water is sucked from the Spa, through the Intake valve and back through the Return valve to the Spa..
Spillover mode... where the water is sucked from the Pool, through the Intake valve and back through the Return valve to the Spa. Since water is not leaving the Spa, it will overflow into the pool.
The EasyTouch (I assume you have one) has two dedicated valve drivers that control only the Intake and Return valves.
If you currently have automated valves that select between the Pool and Spa, then you just need to program the ET to run in the spillover mode.
Thanks for posting,
Jim R.