With the updated ZOOM APP, you can embed your video in your Power Point presentation so that participants with only one monitor can see both you and your presentation.
To set this, go to “Share Screen”, then select “Power Point as Virtual Background” under “Advanced” at the top. Depending on where in the presentation you want to display your video, you can also basically leave the area of your slides blank. Please note that the animation does not work with this presentation method. So if you do not want to show everything on the slide at once, the content must be spread over two or more slides.
You can see what the whole thing can look like in this example video:
For more information on the updated features, see this ZLL blog post.