How to see default layout structure in the Designer?

[A Former User]

I like arranging my widgets through designer but I have one problem with layouts. When I set a layout for group of widgets I can see its edges and boxes that are outlined in green (internal structure) and red (layout bounds). However when the layout is set for the form itself it's structure cannot be seen like this I have to do a lot of guess-work often messing things up moving widgets around. Hence I resorted in arranging my widgets in one layout and then put this layout under the default form's layout.

Since it is redundant I would like to know whether I can somehow enable the structure to be visible for the form's default layout as well?