Add a section break
Place the pointer where you want to start a new section.
Select Layout > Breaks.
Select the type of section break you want.
Add or edit headers
To change a header, scroll to the top of a page and double-click the header.
Under the Header & Footer Tools Design tab, select where and how you want your header to appear in the document:
If you'd like to link to a previous section of the document, select Link to Previous.
Type your text into the header.