Notes is your go‑to app to capture any thought — and with the new Quick Note feature, you can jot down ideas no matter where you are or what you’re doing on your Mac. It’s like writing a note directly on whatever app you’re working in.
Start a Quick Note
Click the Apple Menu > System Preferences > Desktop and Screensaver > Screensaver
Click Hot Corners on the bottom righthand corner
For one (or more) of the corners, use the drop-down menu and select Quick Note
To create a Quick Note, roll your mouse over the selected Hot Corner and click on the Quick Note pop-up