The Mist Question

I want realistic fog at the edges of the map, so that the edges of the map are not visible and not particularly conspicuous, the effect is not attracting much attention. How to do it?

Not sure how many times this has been mentioned but you’re asking about things that have been done too many times:

Exponential height fog, the default is to hide the edge of the map.

Something I can not understand where are these settings for the fog of the map borders? The video does not show what kind of object is selected in the upper right corner. Where does he change these settings?