I’ve been asking for this for ages. The main reason is switching between two displays while at my desk, and one display when I take my laptop on the road. You can in a way. The screen layout gets stored in JSON files, one called PrivatePreferneces.json and SharedPreferences.json (at least on a Mac). You can copy and save them in a safe place and then swap them around, but it’s a royal pain, and just the sort of thing a computer could easily do well. Keep asking.