Apple iPad Pro 11 (2021)
iPadOS 15.1
1 Turn on the screen lock
Press the Top key.
2 Turn off the screen lock
Press the Top key.
Slide your finger upwards starting from the bottom of the screen.
3 Set automatic screen lock
Press Settings.
Press Display & Brightness.
Press Auto-Lock.
Press the required setting.
4 Return to the home screen
Slide your finger upwards starting from the bottom of the screen to return to the home screen.