If you want to add, correct or clarify information contained in your Word document, you can add an addendum. An addendum is also known as an appendix, but the terms are interchangeable depending on the document it is being added to. Addendum are often used in legal documents, such as a contract. For example, you can add an addendum to a contract created in Microsoft Word to make a change to the original terms of the contract.
Launch Word and then open the document to which you want to add an addendum.
Scroll down to the last page of your document.
Click the "Insert" tab at the top of the window, and then click "Page Break" in the "Pages" group. A new page automatically opens with the cursor at the top, left corner of the page.
Click the "Home" tab and then select the Center icon in the Paragraph group. The cursor is moved to the center of the page.
Type "Addendum" and then press the "Enter" key. Type the addendum title and then press "Enter" again.
Click the Align Text Left icon in the Paragraph group on the Home tab. The cursor moves to left side of the page.
Indent five to seven spaces and then type the body of your addendum. From the File drop-down menu, click "Save."
If you have more than one addendum, create a new page for each addendum and use "Addendum A" for the first one and "Addendum B" for the second one, and so on.