Description of the dock bar at the bottom of the home screen on the Redmi Pad SE

The Redmi Pad SE has a dock bar at the bottom of the home screen which is divided into 2 parts. You can modify the APPs icon in the dock bar according to your preference.
Here is a detailed description of the dock bar:
1. The left part shows the APP icons that are set as resident. You can set the frequently used APP to launch them quickly. You can make specific edits by pressing and dragging the APP icon, such as removing, swapping, etc;
2. The right part shows the APP icons running in the background currently. This part cannot be edited. You can clear the background task to remove the corresponding APP icon.
Note:
The dock bar cannot be removed completely. Even if there is no APP icon in the dock bar, there is an empty box at the bottom of the home screen.