This demo illustrates how to implement drag-and-drop functionality between a smartTree and a smartGrid. Users can drag items from the tree and drop them onto the grid to add new rows based on the tree item data. The demo also demonstrates how to handle drag-and-drop events, customize the data being transferred, and provide visual feedback during the drag operation. In this example, the tree represents a membership hierarchy with different levels (Gold, Silver, Bronze) and associated athletes. When an athlete is dragged from the tree and dropped onto the grid, a new row is created in the grid with the athlete's information, including their name, team, and membership level. The grid can be configured to allow further editing of the added rows or to display additional details as needed.