I always like to calibrate settings in my monitors to a get a better picture. Usually pretty straight forward but following the custom color suggestions from Tom's Hardware for this monitor I'm a little confused. They used these settings =

Picture Mode	Custom Color
Brightness 200 nits	81
Brightness 120 nits	53
Brightness 100 nits	41
Brightness 80 nits	29
Brightness 50 nits	12 (min. 33 nits)
Contrast	74
Color Temp User	Gain – Red 98, Green 100, Blue 95
Row 8 - Cell 0	Bias – Red 52, Green 51, Blue 50

 

I have no idea how you set the first five settings, the brightness in nits. I can find nothing in the monitor menu that lets you do this. What am I missing or not understanding? Any help is appreciated.