Amateur streamer - how do I get our stream to go through OBS before it goes to our YouTube channel? Send help!

[Drewstream]

Hi, we're not sure what we're doing but the stream is bypassing OBS and just going straight to YouTube. We're not sure how to fix it. Please help :)

 

[Drewstream]

I really hope my new avatar shows up well, I have high hopes that you'll all like it