*It has been a while since I installed a GFI combo device. *I don't remember
if the switched load is GFI protected or not. *It doesn't say at the link.

From what I remember, the switch is just a simple switch, it has 2
tail wires on the combo device. It has nothing to do with the GFI
outlet, so the OP would need to tie the neutral of the pool lights to
the "LOAD"side, then tie the hot of the pool lights to one tail of the
switch, then the other tail would simply go to the "LOAD" hot
terminal. Again, this is only if he has the 110V feed coming into the
box.
If the patio lights come out of the same box, he can tie those to the
"LINE" side.