You can setup watermarks to appear for consumer (PDF Print) and consumer (View only) roles.
Whilst viewing a site:
1. Click the gear icon to open the menu
2. Select Edit Site Details
Choose the checkbox to turn watermarks on.
The first line appears in small text across the top of the document.
The 2nd line appears LARGE diagonally across the document. We recommend you keep this line as CONFIDENTIAL or PROTECT