Article relates to
RadDock for WinForms
Angel Kanchev, Telerik
August 07, 2008
Last modified by
SOLUTION Select the DockingManager and from its ActionList choose "Show Advanced Layout Designer...".
It opens a Fully functional docking, which works the same way as in run-time:
The form that opens not simply allows to layout the same way as runtime but through its menu "Dock" gives the ability to add/remove Documents as well as DockPanels.