The ProjectExplorer shows a tree view to describe the loaded projects and their ChildWindows.

The ProjectExplorer

A right-click on the project (the top level item) shows a context menu where you can rename the project, save it, close it or shows or hide its ChildWindows.

The context menu of the project item.

A right-click on a ChildWindow (the items under the project item) shows a context menu where you can open the configure dialog of the related ConfigItem.

The context menu of a ConfigItem.

Double-click on the ChildWindow items hide the related child window or, if it is are already hidden, shows it.