How to set up Muffled or Occluded Audio?

So how do I make the audio coming from a TV sound muffled when I am outside a building and when I walk inside its unmuffled and clear? I know ue4 has an audio occlude feature but I know nothing about it or how to set it up, could someone walk me through the process, please provide screenshots as I am a visual learner. I cant find any tutorials on Youtube covering this