Agree with The Texan. You should know at least what pressure yur cpap is set for. As far as adjustments, the how tos are not generally published, mainly because too many people are unable to understand, and could cause themselves injury or defeat the purpose of the CPAP. As far as I know, there are no laws preventing you from knowing this information, and if you feel the necessity, of adjusting your machine as you need. All the information you need is available on the internet. (if you know where to look).