How to stream audio of a single program/game using OBS and PulseAudio

You want to stream a game like the Jackbox Party packs to your friends, but use the same computer for voice chat at the same time without that audio appearing on the stream?

Then this might be a solution.

You have any feedback or ideas to improve this? Contact me on Social Media or per E-Mail. You can find my other projects at lw1.at.