Our online help which you can find here
will be updated with a help article regarding the new built-in DragReorder feature in RadDocking by the end of the week.
In order to enable the feature all you need to do is to set the AllowDragReorder property of the Docking control to true.
The next code snippet shows how to enable the Tab DragReorder feature:
If you have any other questions do not hesitate to contact us again.
the Telerik team