The following image shows what my app looks like on startup.
Nested QDockWidgets 01.jpg

This image shows what I want it to look like at startup.
Nested QDockWidgets 02.jpg

AllowNestedDocks is enabled in the MainWindow from the Designer. I accomplish the above image by draging one of the docks to the proper position.

I tried the suggestion I found here with no success.

Thanks in advance.