DMX Setup From scratch

Hi guys
I have a problem that the DMX light fixtures are not shown in the scene
I saw all the videos possible in YouTube but all the videos are not saying this part
and most of the videos they are working on existing project not a one from scratch
and even if someone starts from scratch he never says the changes he does in the project settings or editor preferences

i do all the steps but and the univs are working and the faders shows that but the beam of the light is not working at all
and consider that i am in the simulation mode already but in the videos once they drag the light fixture to the viewport u still can see the beam is up …

so can anyone help me in that ??