I am sorry to bring back this topic, but in documentation I found this.
https://docs.unrealengine.com/en-us/Engine/Rendering/LightingAndShadows/AmbientCubemap
It says Ambient Cubemaps. But I searched the engine and didn’t found the button which it says “Lighting Image Based Lighting”. And documentation doesn’t explain where it is. So as a noob, may be I missunderstood something, but from what I understand, it is same IBL function which you talked about. Or is this the feature, which Epic already removed? Then why is it still in documention page?