- Click the apple icon on the Menu bar.
- Select System Preferences in the drop-down menu.
- In the System Preferences window, select Desktop & Screen Saver.
- In the window that opens, go to the Screen Saver tab.
- At the bottom of the window, click Hot Corners.
- In the Active Corners dialogue box, open the lower-left drop-down menus.
- Select Desktop.
- Click OK to confirm the settings.
