Tap Settings. Tap General. Scroll down and tap Accessibility.
Scroll down and tap Guided Access to turn on the tool.
Guided access keeps the iPad in a single app and allows you to control which features are available. Set a passcode.
To use guided access triple click the Home button in the app you want to use. Tap Start. To turn off the Guided Access Feature, triple click the home button and enter your Guided Access passcode.