Manual For Dummies :How to use MSFS with oculus rift s

A detailed instructions for us that only used programs like Excell, Word, etc. “Computer Deficient.”
In my search, openXR been cited a few time, but unclear if it is required. Is openXR included in the Oculus App. or needs to be download & installed.

Does the registry have to be edited?

Any help pointing me in the right direction is truly appreciated.

How to install OpenXR – Microsoft Flight Simulator Support (zendesk.com)