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System Preferences on your Mac
System Preferences is the place where you personalize your MacBook Pro settings. For example, use Battery preferences to change sleep settings. Or use Desktop & Screen Saver preferences to add a desktop picture or choose a screen saver.
Customize your MacBook Pro. Click the System Preferences icon 
in the Dock, or choose Apple menu 
> System Preferences. Then click the type of preference you want to set. To learn more, see Customize your Mac with System Preferences in the macOS User Guide.
Update macOS. In System Preferences, click Software Update to see if your Mac is running the latest version of macOS software. You can specify options for automatic software updates.