Which one . ? And what's the point of the other one ? Ty just starting to get into them
I would have to look which one is doing what but basically one is for to set the setting for current regulation and the other one is for setting the voltage limit.
What I did on my setup (2 quantum boards in parallel) is to adjust the current to the value I want: either you measure the current or the light output or check the operating temperature of your boards. Set it the way it suits you.
The second potentiometer will be used as a safety:
If your driver is a CC driver outputting let say 1000mA to two boards in parallel (500mA each) it will try to output the same amount (1A) to only one board if the other is failing. This could lead to damages.
The good thing is that while the current ramps up the voltage will also go up (you should be able to find the V/I data for your boards/strips ) so if you set the second potentiometer correctly to limit the max voltage, you will therefore limit the max current.
Basically turn both pots to the max (clockwise). Becareful to use a small screwdriver and do not apply to much force as you can brake the potentiometer.
Then start to decrease the first one (Current regulation of I remember well) until you have the correct setting (current/temperature/light output)
Once you are happy with that setting, turn down (CCW) the second potentiometer until you see a voltage/current/light output drop (the one method which suits you the best).
The last step is to turn the V potentiometer a little bit the other way (CW) : first you should see an increase of current/voltage/light output and then nothing. If you stop just after it has no more effect it will be set to a voltage slightly higher than the operating one and never go over.
or you can adjust first the max voltage with a multimeter and then decrease the current to a lower operating range.