Final answer:
The Header and Footer features are found under the 'Insert' tab in Microsoft Word. They are used to add text or graphics in the top or bottom margins of a document's pages.
Step-by-step explanation:
The Header and Footer features in Microsoft Word are located under the Insert tab. This is where you can add or edit headers and footers in your document, which are areas in the top or bottom margins of each page that can contain text or graphics. These features are especially useful for adding page numbers, dates, and the document title or author's name.