Hot Corners run an action when you push the pointer into a corner of the screen.
Set them up
- Open System Settings → Desktop & Dock.
- Scroll down and click Hot Corners.
- Pick an action for each corner: Mission Control, Application Windows, Desktop, Notification Centre, Launchpad, Quick Note, Start Screen Saver, Put Display to Sleep or Lock Screen.
Stop accidents
Hold a modifier while choosing an action, such as ⌘, and that corner only works while you hold the key.
The top centre
On a MacBook with a notch, the top centre of the screen is a fifth “corner” of sorts: notch apps open when you move the pointer there. NotchMind, which I make, opens on hover by default, or on click or press and hold if you’d rather not trigger it by accident. See notch gestures.
NotchMind