HOW DO I USE THE EDGE BAR FEATURE?

Android 12 introduces a new feature – Edge Bar. 

Slide in from the buoy position to open the Edge Bar. The new edge bar supports more powerful functions like partial screenshots, float windows, etc. You can quickly drag an app icon out of the sidebar to open it in floating window mode. Click the plus button to add the function or content you want. 

For additional set up options, go to the main menu → “Settings” → “Advanced Features” → “Edge Bar”.