Just had a brainwave....
Can't test it - but... what if you plug in an external monitor, and arrange it so that the second monitor is on top of your primary (built-in) screen? That should enable you to move an image off the top....?
It may require you to move the menu-bar to the external monitor and put Zoom / Skype / FaceTime on what would now be your laptop screen (secondary monitor).
Remembering back when I was running multiple displays (if you haven't done it, OMG, it's SOOOOO useful!), you *can* leave a window overlapping the two monitors.