I'm having trouble sending a pm. The back up rate is too high. How do I get past menu lock to lower it

I have a muscular dystrophy and do have Trilogy questions. I went from an S9 ST auto to trilogy avaps ae. As per usual, the RT that brought it out was none too educated on it. First of all, there was no humidifier included. She told me the bacterial filter, was some sort of humidity function. (?). Y...