I work as an engineer and I use it like a desktop for each project. Works very well when you need to work on more than one project at a time - all the programs, files, folders, browser tabs for one project are on one screen exactly where I left them, and exactly in the layout where I left off.
I also keep the first desktop as a HOME screen, where I have email, Teams, Zoom, and my timesheet program. If I need to talk to someone about a project while I work on it, I just pop that chat out into a new window and move it to the respective desktop.
The only limitation is that if you open something (like an Excel file) through Windows Explorer on desktop 1, but you have an instance of the program already running on desktop 3, it will jump around the desktops and open on the one where it's already open. I have no idea why, not all programs do that, but it's easy to move it to the correct place.
Also it's even more hand if you learn the keyboard shortcuts.