title: Drag and drop docking
body: <p>Is there a way to create a dynamic dock in extjs ? Basically I need to drop the draggable panel in the desired region, just like the image I attached.<a href="https://i.stack.imgur.com/L4Hx1.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/L4Hx1.png" alt="enter image description here"></a></p>
  
  <p><a href="https://i.stack.imgur.com/y4tcL.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/y4tcL.png" alt="enter image description here"></a></p>