HDR workflow

Hi, i´ve been looking for info about HDR workflow in UE4 and the only documentation is this:

But with that info i cannot make it work. It gives you a few commands and that´s all. It doesn´t explain how to visualize it properly, or how to export to another software like DaVinci Resolve. Or if we have to do something different with the lighting on the scene.

Here i only found a couple of people asking for the same thing but with no replies or no good info. And if i look for it in Google is all about HDRI, not HDR visualization.

Is it possible to contact some of the developers to ask them about it?