You are getting lots of information, much of it incorrect. There is a tire expert on the forum, maybe he'll come on and give some good information...he was a tire dealer for 40 years and gives seminars at many rallies. His advice is to check the weight on the chart, and if using individual wheel weight, add 10% or 10 lbs to the pressure noted in the manual for the heavy side, and use that pressure for all tires on that axle. If not using individual wheel weight, divide the total weight on the axle by two, and add 10% or 10 lbs PSI to the pressure noted in the manual to both sides...same pressure for all tires on that axle. In either case do all these reading prior to driving, either the day prior or morning before starting.
