Screen Sharing can only control one of multiple remote displays
I have a 3-monitor setup at work, and have screen sharing enabled. I can remote in and see all the screens, switch between them, etc. BUT... I can only control one display, apparently whichever one the Finder was last active on. I've seen other people ask this question, and have tried the only answer I've seen: make sure the arrangement on the target computer's displays is properly aligned and not overlapping. That did not help.
I've already looked at the guide here: Control or observe one client computer with Remote Desktop - Apple Support
That guide does not help at all for this.
Does anyone know how to gain control of more than one screen when the target computer is a multi-display setup?
Thanks,
MacBook Pro 15″, macOS 10.15