setting up my stream send help

so im joining the space. got a capture card, xbox series x, and wireless headset ( turtle beach stealth 600 gen3) how the hell do i set this up so the stream gets game audio, game picture, partytchat audio (discord to if we use that becuase some friends dont use xbox). i want to be able to hear coms and the game. this is rally frustrating. any help is appreciated