@karlreed , PhotoLab 4 introduced watermarking. The instructions are here:
If you don’t see the Watermark palette in your workspace (note, the trial version has all of the ELITE features), then look in the menus to make sure it’s enabled and visible. Also, be sure that the filters at the top of the right column aren’t hiding any of the palettes that you need.
With the palette, the watermark can be turned on or off in the preview. You can choose to enable or disable watermarking in the export dialogue.
I hope this helps.