Hi
Are you asking for the watermark text to run vertically down the page, or change the vertical position of the watermark? Either way the watermarks are only WordArt objects in the document header.
If you edit the header you can select the "Watermark" object created using the normal ribbon tools and then use the standard commands to Rotate in the Arrange group of the Format tab or move the object manually or use the Position button to specify vertical
position more accurately.
Maybe not as simple if the option was provided but still relatively quick.
Hope this helps
G North MCT