Hi there,
Awesome, Thanks for the response , However the picture from the op’s dropBox shows it is ceiling mounted next to a LIght and Above the subject. I do believe you have provided some great info on the parameters all along. 
The Total Height is One setting, and the Highest point a subject maybe below the sensor ? is that what you mean or as if the subject were collapsed/fallen on the ground in a mass the highest point of that mass?
ie. a 9’ foot ceiling, and the 2.5 feet from floor if he lays on his side. Ah’ this makes sense with the last statement, thank you " that way, you won’t let the radar mistake the act of sitting down for a fall "
Let see what he(op)figures out, I don’t have one but should get one it looks put together well. I like it’s a C6 as well.
GL 
PJ 