I need to create a form in which I think I need to combine multiple layout managers, specifically I want to use a GroupLayout with a single column and multiple GridLayouts. This form is being used for someone to select a document to create out of a selected project. The top portion starting with the Welcome and the next 2 select boxes would be in one Grid Layout followed by the line and button separately then the lower section of questions and select boxes as another Grid Layout then another separate button. The attached figure shows a small sample of what I'm looking to achieve (there will be more questions added besides the ones shown in the lower portion to be saved as defaults).

My first question is if I can use GroupLayout with just one column? And secondly, how would I add the line and buttons so that they are center aligned?

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