Header and Footer
A header is a text or graphic that is automatically printed at the top of every page and footer is a text or graphic that is automatically printed at the bottom of every page. The advantage of using header and footer is that you have to create them only once and they automatically appear on each page.
To insert header in the document, select Insert → Header and Footer → Header
To insert footer in the document, select Insert →Header and Footer → Footer
You can give the document name or chapter name in the header section and page number in the footer section.
To enter page numbers in the footer section, place the cursor in the footer section and select Insert → Page Number.