Section Breaks, Part 2
Microsoft Word requires a section break when there is a change to page margins, orientation (portrait or landscape) or size, to footer contents or header contents.
How to set page orientation
Go to the Insert tab, Page Layout group, and select the dialog box launcher at the bottom-right of the group.
To set page orientation, go to the Layout tab, Page Setup group, Orientation option, and select “Portrait” or “Landscape” from the dropdown list.
Note: As the icons in the dropdown list above show, portrait pages are long and narrow, while landscape pages are wide and short.