Starting with version 1.0.30, we have two new features that make it easier to change the structure of a display hierarchy:
If you select several display elements (all children of the same parent display model), right-click and select "Encapsulate", the selected elements will be moved into a newly created pane. All relevant flows will be re-routed to reflect the change.
Similarly, if you right-click a display element and select "Move Element", you'll receive a list of display elements in the save level. After selecting one of them, the clicked element will be moved to the selected target element, and any links will be re-routed accordingly.
For best results, use the Firefox browser..