Question / Help problems when djing on mac

[harvey 123123]

currently want to stream through OBS from Traktor Pro 3 software, I need a way to send audio internally to obs, as well as to 2 studio monitors and headphones. I have managed to send to monitors and obs but not to the headphones, so almost appears as if I need availability to another output or something. anyone got any ideas? all on mac catalina

 

[Narcogen]

Free way: another aggregate device created in Audio MIDI setup: virtual device for OBS, hardware for monitors, hardware for headphones.