Pin Window
What is Pin Window ? >> Android's pin windows or pin screen feature allows you to restrict individuals to one specific app on your phone. This feature is extremely useful when you want people to not have access to other apps when they borrow your phone.
How to turn this on ? >>
Step 1 :
#Open Setting and Select Biometric and Security
Step 2 :
#Find and Select Other Security Settings
Step 3 :
#Turn on Pin Window from there
#After turning this on, you will see an extra feature while using apps, follow the video