Layouts and form resizing

[Chisum]

I have been studying some of the examples and demos as a way to learn about Qt and Qt Creator. My initial goal is to design a dialog. When I preview the dialog, I want the two buttons in the lower right corner to maintain their positions relative to the lower right corner of the dialog. I am not having much luck with this effort.

I have included the qsqlconnectiondialog.ui file from the Sqlbrowser demo to demonstrate my problem. When I look at the properties of the objects in this file, the dialog has a layout section at the bottom. How do I get this in mydialog.ui?

I would sincerely appreciate any help

Gary