Enabling and Configuration
In the admin panel of WaterMark, you will only see one tab with settings and the other for Support.
The first field lets you enable WaterMark and start setting up the watermarks for your products and categories.
ImportantAfter enabling the module, you will have to enable WaterMark for your layouts. Go to Design > Layouts and choose which layout the module should be enabled for. It does not matter if you choose content top or bottom, since this module does not use a separate widget.