Insert Section Breaks to Organize a Document
Section breaks are used to change the layout for a page or group of pages in the document
Insert Section Breaks
1. Go to the paragraph need to insert a section break
2. From the Ribbon, go to Layout tab > Page Setup group > click on Breaks, and then select a desired option under Section Breaks

NOTE
- The section break that controls the formatting of the last part of the document is not shown as part of the document
- The section breaks are used to create layout or formatting changes in a portion of a document such as: margins, page size or orientation, page borders, vertical alignment of text on a page, headers and footers, columns, page numbering, line numbering, footnote and endnote numbering

Unlink/link the Header and Footer in the Section Break
1. Select the headers or footer in the section break
2. Go to Header & Footer Tools tab > Options group > click the check box next to Link to previous to turn off /on

