Use BaseDeviceProfiles.ini or Device Profiles window in editor?

Development Platform & Builds Debugging, Optimization, & Profiling
1

When I first read about device profiles the tutorials/documentation points to BaseDeviceProfiles.ini. Which you apparently can copy to your own projects config folder to overrule the BaseDeviceProfiles.ini from the Engine/Config in the unreal engine folder. Later I learned that there is window in the editor for managing device profiles (under developer tools). The lines I edited in the .ini file did not show up there.

So what is currently the correct way to set up device profiles?

2

Can somebody please answer this? Maybe someone from Unreal? This seems like a very simple question to me! thanks!