Choose View > Show/Hide Side Panels or use the Show/Hide Settings tool () on the left of the Document window.
Each panel has an tab labeled with its name. Drag the tab up or down using the mouse. When you see a “shadow,” drop the tab and the panel will snap into the new position.
To undock, use the mouse to hover at the top of the associated frame. When the cursor changes to a 4-pointed arrow, drag the frame to the desired position. To redock, follow the same procedure, moving the frame near its original position. When a “shadow” appears, as shown in the image below, drop the frame and it will snap into position