Figure 1. Watermark is part of the page background in Microsoft Word. How to Insert and Modify Watermark with Word (for Office 365 & Word 2019) Add, remove or alter watermarks with Word (for Office 365 & Word 2019) · Click in a blank space. · Click 'Watermark in the Page Background Group' in the Ribbon. · In the Page Background group, click Watermark. · Click Add or Add to Page. (See . How to Add a Watermark to a Word Document (Excel & Open Office) How to Add a watermark to any word document — Excel and Open Office (For PowerPoint 2019) · Click in a blank space. · Click Add New Watermarked in the ribbon.