Use quick settings

You can use quick settings to toggle Wi-Fi, change display brightness, and more. To open quick settings, swipe down with two fingers from the top of any screen. Or, swipe down with one finger to pull down the notification shade, then touch the quick settings icon in the top right.

From quick settings you can:

If you see the following picture, then you have not set up your owner profile. Touch > People > Set up my profile.

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