New to OBS Mic and headphone help

[Bambiuk88]

Hi guys so i am very new to using OBS with zoom so i have got my external cameras working and i have got VB cable my question is, i want to play background music at the start and every now and then play a video clip with audio i have got that part working but what i would like to do is also use my yeti mic and headphones so i can still hear what been said too hope you understand what i am trying to do