Sometimes it happens that you need to disable a certain part of the iPad's touchscreen. Perhaps you want to put your iPad into "kid mode" - allowing kids to play videos and play games without tapping on certain areas of the screen and thus not leaving the app. Or, you want to disable part of the touchscreen for your own purposes. iPad has a feature called Guided Access that allows you to temporarily disable the mechanical buttons and part of the tablet's touchscreen.
Steps
Part 1 of 3: Enabling Guided Access

Step 1. On the iPad home screen, tap on "Settings"

Step 2. Select "General" and then touch the item "Accessibility"

Step 3. Scroll down and select Guided Access

Step 4. Turn on the guide access by pressing the button
It should turn green. If the password setting window does not open, click "Password Settings" and select "Set Guided Access Password".

Step 5. Enter the password you want to use to exit the "Guided Access" mode
Come up with a password that you will remember, but your child or other user does not know. You will then be asked to enter the password again for confirmation. After that, you can exit the settings.
Part 2 of 3: Using Guided Access

Step 1. Open the app you want to use
Guided Access will work with any iPad app. You can allow children to watch videos or play a certain game.

Step 2. Quickly press the "Home" button 3 times
This will open the Guided Access settings window.

Step 3. Use your finger to draw the areas on the screen that you want to disable
These blind spots will remain in the same place no matter what happens on the screen. You may want to disable clickable areas, exit buttons, in-app purchases, and other "inappropriate" features.
Drawn borders don't have to be precise. The iPad will turn the borders you draw into a logical shape for that area (square, oval, and so on), and even then you can resize the selection by dragging a corner or one of the sides

Step 4. If you want, you can disable the hardware buttons
Click on "Options" and change the "Sleep / Wake Buttons" and "Volume Buttons" settings according to your preferences. If the buttons are highlighted in green - they will work, white - they will not.

Step 5. Disable the entire touchscreen if desired
Switching the Click slider so that it glows white will put the entire screen in view-only mode; the screen will not respond to any taps.

Step 6. If required, disconnect the position sensor
When this button is white, any changes in iPad position will not affect the operation of the tablet and applications on it in any way.

Step 7. When you are ready to use the guided access, click the "Start" button

Step 8. Use the app or have your child use it
If the user touches the disabled zone, nothing happens, so they can watch videos or play their favorite games without any consequences!
Part 3 of 3: Exiting Guided Access

Step 1. To exit the Guided Access, press the "Home" button three times quickly

Step 2. When asked for your password, enter it

Step 3. Change settings or exit Guided Access
Changing the settings is useful if you want to adjust the disabled parts of the screen for another game or application. Then, if you want to return to the Guide mode again, press "Continue" or use the "End" button to exit.

Step 4. Return to Guided Access at any time
After exiting this mode, you can always return to it by pressing the "Home" button three times. A password may be requested.

Step 5. Let your child play with the iPad
Rest assured that kids can play and watch videos fearlessly without switching to other apps or clicking on ads that might be inappropriate or cost you money!
Advice
- To completely disable Guided Access, go to Settings and disable this function (move the slider back to the white zone). After that, pressing the "Home" button three times will have no effect.
- While there are some interface differences, the same instructions will work on iPhone as well.