How to calculate dose?

Hi I am continuing my education in FLUKA and first of all I want to
express my acknowledgment to everyone who helped me.

I came across to another problem. I read almost all articles about dose
calculation but non of them helped me.
I want to calculate dose outside of my concrete wall inside which beam with
20Mev energy hits the iron targed.

How should I use user routine deq99c.f and where can I find it?
Routine deq99c.f is not included under usrmvax directory in which user
routines of fluka exist.

Is dose calculation done with USERWEIG card with weight parameter set to
FLUSCW?

As I understand in order to use user routines I should compile deq99c.f
routine in compile section and then use created executable in the
Override options ( Exe ) of Flair Run section. After that all outputs of
USRTRACK or USRBIN card will be automatically converted to dose plot.
Am I right?

Below I attached my input file. Thanks!
I am using flair in virtualbox.