How can I get my camera audio into A zoom meeting?

I want to send my camera video and audio out into a Zoom meeting.  I use the Panasonic Lumix tether software to bring the camera video in:  Zoom recognizes it.  However, I cannot get the camera audio into the meeting.

I am running the headphone signal (TRS) out of the camera into the microphone connection of a TRRS combiner that I run into the computer headphone jack. In the audio settings, the only microphones available are Realtek and System (Realtek).

Can anyone point me in the right direction?

Thank you...

Ron