Sampling Shared Microphone for existing party

Hi there, I was wondering/hoping that this would be possible to do. We need to record the microphone of the user when they are already in a system party. I have looked into this using the Platform SDK, but that would require a connection to be established in the application.

We are looking to tap into a pre-existing party so we do not need the additional UI. Also how do I go about testing parties as a debug user in Unity?

I am currently developing on an Oculus Rift + Oculus Quest 2.