How to turn ssao ON?

Hello,

How to turn ssao ON?

I’ve found this:

but this documents have wrong construction IMO and don’t tell the most important thing: where is option and how to turn it on :\

And this, but IMO it’s outdated topic. btw. Turning ssao by material cubemap? How messed up is this? I think it was updated\replaced.

In Global PostProcess I’ve found ambient occlusion tab but…it does nothing :\

I tried to use buffer visualization but got 100% white screen.

Any advice appreciated.