AppStudio makes it easy to nest controls inside of other controls. Want a group of Buttons to be inside a Container? Drag and drop them into the Container.
But if a control is buried deep inside several layers of Containers, it can be difficult to select in the Design Screen. AppStudio 7 makes it easy.
Right click at any point in the Design Screen, and AppStudio will display the hierarchy of controls at that point, so you can select the one you need.
In this example, the right click was done on top of the Button. The context menu shows that Label1, Container2 and Button1 are there. If you click on Button1 in the menu, it is selected.