Do I need to change the auto flats text file, what I need it to do is save flats
in a D:\ACP\Images\Flats folder

It looks like this s where I need to change the sun position but this is different for filters

HA is + 2
IR clear is -4
and Bin 2x2 RGB is -3

I usually take flats at dusk for what I need

I read the text on this but still a little confusing

I take sky flats so I assume ACP adjust the exposure as it gets darker to keep the same ADU on flats