Down here, or at least with my unit, the nurses make all the decisions regarding profiles, dry weights etc. The docs might request say a low calcium bath or whatnot, but in general they really leave the day to day stuff to the nursing staff, and fortunately for me, most of the nurses listen to my requests or comments and we sort of work on it together... So I can say if I want a profile or not, or what pump speed and so on. Sometimes even the UF total is up to be negottated.. usually if I have taken off too much or I want to modify the washback a bit (if I am going to have a 2nd drink or not).
I like my unit. they rock!
My unit is the same. I choose my profile and how much I want to take off in the first hour, I change the tempreture setting up and down during my session depending if I'm hot or cold.