In the guide that you pointed out it says that Watermark Editor Tool it is not a package to be downloaded separately from the PTC site but is contained in a folder in the Creo View one.
Installing the Watermark Editor Tool
The Watermark Editor tool is included with Creo View software package. You must install it separately. Start the installer from a subdirectory of the installation folder. Installation instructions follow.
1. In the installation directory, navigate to and open \watermark_editor.
2. Double-click ProductView_Watermark_Editor.msi. The ProductView Watermark Editor Setup Wizard dialog box opens.
3. Click Next. The End-User License Agreement page opens.
4. Read the agreement, and then select I accept the terms in the License Agreement.
5. Click Next. The Destination Folder page opens.
6. To accept the default installation location, click Next, and then skip to step 8.
7. To set a new installation location, follow these steps:
a. Click Change. The Change destination folder page opens in a new window.
b. Browse to a new location, and then click OK. The installation location is updated.
c. Click Next.
8. Click Install. The Watermark Editor tool is installed.
9. Click Finish.
