Select Picture watermark, and find the picture you want to use. A washout effect is applied by default, but you can switch that off by clearing the Washout checkbox. You can also control the size of the picture by adjusting the Scale setting.
Select Text watermark, and enter your custom text in the Text box.
Use Font, Size, Color, Layout, and Semitransparent to customize the look of the text.
Using No Watermark option
Selecting No watermark removes the existing watermark from the document.
Preview changes with Apply
To preview your watermark, choose Apply instead of OK. Make other selections until the watermark is the way you want it. After you apply the changes, choose Close to close the dialog box.