W/E in online meetings

Is it possible to display slides to your main screen, so that they can be screen-shared/presented in a Zoom or Google Meets setting?

You'll need to connect a second monitor, tv or projector. Once that is done, Zoom should give you the option to share just the second display and not the first.

https://support.zoom.us/hc/en-us/articles/201362583-Using-Dual-Monitors-with-the-Zoom-Desktop-Client