Editing Watermarks on a collection - Tutorial Video – Pixieset - Help Center

If you wish to add, remove or change watermarks on existing photos, you can reprocess the photos and apply your preferred watermark settings.

Select one or more photos in a collection
Go to the bottom toolbar and click Settings icon > Watermark
You can then select the watermark you wish to apply (or No Watermark if you want to remove them)
Select Apply to all in this collection to reprocess all photos
After clicking Save the photos will reprocess with the updated watermark settings