Ray Tracing Overview - Unreal Engine 4.22 Preview

Guys, no one else seems to say this so I will-

How do you use denoiser in Command line?
It is not referenced how to use Command Line at all in this doc. Just show a screenshot with an example so users can easily access the tool.
I am dumb and have no idea, but a picture would make it so simple.

PS - Auto exposure in dark scenes is non-stop when raytracing.
Min Max have to be adjusted by default, it fights you constantly, again in a dark scene.
You need to dimly light your scene somewhat off screen in order to deactivate it almost. Why is this necessary to constantly have to battle auto exposure.
If there is a way to shut it off, show in this document PLEASE, again screen shot, not words. Unreal’s words are too slow. A picture is FAST.

THX!