Navigation Dock
Go to
Settings > System & updates > System navigation, and enable Navigation Dock.
After the Navigation dock button appears, you can:
•
Drag the button to your desired position.
•
Touch the button to go back.
•
Double-touch the button to go back two steps.
•
Touch and hold the button, then release it to go back to the home screen.
•
Touch and hold the button, then swipe left or right to view recent tasks.
7