A watermark is a design appearing in the background of every page of the document. Watermark typically identify or decorate pages. Watermark can be configured at both the project level and document level.
The following steps explain how to configure project level watermark:
1. Go to Project Configuration > Project Definition > Document and Reports, as shown below:

Allow documents to overwrite this watermark: If it remains selected, documents can have their own watermarks, which overwrite the project watermark.
2. Click on “Watermark” button.
3. The Watermark configuration window displays, as shown below:

Configure watermark in this dialogue to apply it at project level.