Well pressure is never going to increase beyond what you put in it plus normal temp/elevation induced temporary increases.
And low pressure is up to you.
Assume the threshold is the same for all positions, set it whatever you want “below” your lowest cold inflation psi.
Also a good time, since you’re obviously keenly concerned about tire pressures, to very what you should be running and not just what the door sticker says on a modified chassis.
It’s probably closer to correct than some, but do you know if it is?
Example, if I ran “sticker pressures” on my truck all the time, I’d by now have needed a new kidneys, beat up some steering components unduly and worn tires out improperly.
2016 Ram 2500, MotorOps.ca EFIlive tuned, 5” turbo back, 6" lift on 37s
2017 Heartland Torque T29 - Sold.
Couple of Arctic Fox TCs - Sold