Zoom with connected overhead projector

I want a side-by-side view of PowerPoint slides and Presenter to be seen by the audience. I am running an In-house/Zoom session that has a tracking camera on the Presenter at the podium. The Presenter is wearing a Lavalier microphone that is heard through the room’s amplifier, and connected to the host computer via an interface. Connected to the host computer is a PP slide advancer, and an Epson overhead projector and screen. The in-house participants see the slides in the room during the presentation. The Presenter advances the slides with a remote through the host computer. 

For the Epson projector, we did windows key + P for expand mode. The Epson is the 2nd computer.

The Presenter is pinned.

The audience does not see the side-by-side view that is usually seen with a straight Zoom session.

The host computer (the one with the desktop Zoom app that generated the Zoom link) shows a side-by-side and a thumbnail of the speaker. 

We want to have a side-by-side view for the remote participants. We want to upload the session to our members-only site at a future date.

We have searched everywhere for a fix.

We have a 100 login limit and no phone support.

I have a Presenter coming on November 7th.

Pleae help.  Thanks.