Show shared content over participants on 3rd monitor

[dale_]

Hi all

We have this setup for a church-

AV desk PC with monitor 1 for windows and av workspace etc

AV Desk monitor 2 for zoom showing participants and controls etc

Monitor 3 is the big screen tvs for the audience 

Monitor 4 is just for the speaker at the podium

Monitor 3 shows AV content controlled off monitor 1 such as song lyrics etc. It also shows the remote zoom active speaker when needed by alt and tabbing between zoom and av windows.

We want monitor 4 to show a gallery view so the speaker can see the remote audience. However we also want it to show shared local content when screen sharing. Is there any way to achieve this? 

Many thanks