Output Surround sound to 5.1, 7.1 speakers?

Hi!
Unity has a simple setup that allows you to customize the sound of the AudioSpeakerMode Mode5point1 environment. As a result, audio sources are automatically distributed between the speakers and, for example, are played on the rear speakers if objects are located behind the player’s camera.

And how to set up surround sound and unreal 5 correctly? And is it even possible to do this? Is there any instruction on this somewhere?

I found Audio Bus Channels and there is an Audio Bus Channels option there. I connected this Audio Bus to the project settings, but the sound is still not output to the rear speakers, only to the front ones.