Set Up Hot Corners on Mac
You can use one or all four hot corners per your preference and decide which action to take from a list of options.
Using Hot Corners on Mac
Once you set up hot corners, it’s good to give them a test to make sure the actions you picked work for you. When you finish, select OK. You can then close the System Preferences and try your hot corners. Move your cursor using your mouse or trackpad to one of the corners of the screen you set up. It should invoke the action you picked. If you included a modifier key in the setup, hold that key or the key combination as you move your cursor to the corner.
Remove Actions From Hot Corners
If you decide later that the actions for the hot corners aren’t working for you, you can remove them.
What Are Hot Corners?
Hot corners on macOS let you invoke actions by moving your cursor to a corner of the screen. For instance, if you move your cursor to the top-right corner, you can start your Mac’s screensaver, or if you move to the bottom-left corner, you can put your display to sleep. Plus, you can add a modifier key such as Command, Option, Control, or Shift. So, you can set up a hot corner to require a key press when you move your cursor to that corner. It stops you from accidentally invoking an action if you move your cursor to a corner for another reason or by mistake.