As for the OSD, everything is split into 8 main tabs, as you can see here:
The OSD system appears unchanged since we last looked at an Evnia screen. It's perhaps not the prettiest UI going, but it has plenty of features and is easy to navigate using the joystick. My only real complaint is that there are no customisable shortcut options – being able to quickly adjust brightness without diving into the main OSD itself is always a welcome feature to me.
There's also the option to use Evnia Precision Center, a Windows-based piece of software that lets you adjust the monitor's settings directly from your PC. It seems absolutely fine in my usage, plus it allows the monitor's firmware to be updated which is always a positive.