Ombre e luci in autocad 2019

[joe]

Hello
I wanted to ask you what is the system to change existing lights in autocad 2019
i.e. modify the shape of a light, attenuation the softness etc. these parameters can define them, on command line, only when I insert a new light; and once inserted, if I want to change it, in the property window I do not see the option "details of rendering shadows"; above all it brings me as fixed and not changeable the voice " reverse square attenuation"

 

[lattu]

I believe that this is not possible.
and in fact you can not change already inserted lights
unfortunately autocad is not the maximum on this front