iPad Pro 11" (4th Gen)
Turning use of lock code on or off
The lock code protects the contents of your tablet from unauthorised use (such as pictures and messages). When the lock code is turned on, it needs to be used every time you turn on your tablet and when it has been in sleep mode.
Press Settings.
Press Face ID & Passcode.
Press Turn Passcode On and key in a lock code of your own choice twice.
Press the indicator next to "Erase Data" to turn the function on or off.
If you turn on the function, press Enable.
Press Turn Passcode Off and key in the lock code.
Slide your finger upwards starting from the bottom of the screen to return to the home screen.