First tap on the home button to go back
to the home screen
From the home screen swipe down
At the top in the quick settings panel tap on the settings icon
In settings go down and tap on apps
next tap on the option key at the top
at the pop-up menu select special access
in here tap on picture in picture
then go down the list here and select an
app that you want to allow or don’t allow special access to picture in picture
and finally once you have granted or denied a permission you can tap on the
home button to go back to the home