Click a square with a plus in the middle and then click one of the Windows apps from the pop-up list to add it. Optionally, choose apps that will display status information while the screen is locked (for example, Alarms and Clock or Weather).Optionally, choose a Background option from the dropdown list.
![big desktop clock for windows 10 big desktop clock for windows 10](https://mrwallpaper.com/images/high/new-year-big-clock-wine-glasses-gmarc15g3j2d3yjg.jpg)
![big desktop clock for windows 10 big desktop clock for windows 10](https://img.apponic.com/68/82/f2c80f637f1411322d1633656d262941.png)
Click Screen Saver, and then use the slider to choose 15 minutes (or less).
![big desktop clock for windows 10 big desktop clock for windows 10](https://wallpaperaccess.com/full/1783296.jpg)
From the Apple menu, choose System Preferences.See instructions below for how to set your screen to lock automatically for Mac or Windows devices: Mac How to Set Your Computer to Lock Your Screen Automatically This is necessary to prevent an unauthorized person from being able to see sensitive information or exploit access to your computer in your absence. Unless your computer is in a secure space that is accessible ONLY BY YOU, you must run a screen saver that will automatically lock your screen after 15 minutes of inactivity and require a password to unlock it.