Pages 5.2.2 Business Resume: How to modify the Section Layout Margin

I started writing a document using the Business Resume template in Pages 5.2.

On the first page (only) there is a big vertical gap/margin/whitespace between the header and the section.

I was wondering how you can resize the section OR remove that gap.

This gap is only on the first page, and is not applied to the second page.

In previous versions of Pages, you had layout margins, but I can't find them in Pages 5.2

Thanks

(in red is my question)

On page 2, the gap is narrower.