How to Add Watermarks to Pages in macOS High Sierra. Aug 23, 2024 — (1) Drag the bottom half of the photo and place the † below the subject in the Photo List. (‡) and (†) are optional. How to Add a Watermark to Pages Documents on Mac and iBooks. May 20, 2024 — (1) Drag a watermark by holding down your mouse button and moving it up or down in your Document. · (2) Press and hold the Watermark Drop-down menu button. >> When the Watermark Drop-down menu appears, select ― Add a Watermark to Page. (3) Hold down your right-click (Control + Click) and click on the Watermark Add to Page toolbar button.