If you want to add a watermark to photos in Photoshop, there are a few things you need to know. First, you need to create a file called “watermark.png”. This file will contain the image data for your watermark. Next, you need to open the “Photo Editor” window and click on the “File” button. Then, select the “Photos” folder and click on the “Open” button. Finally, select the “watermark.png” file and click on the “Create File” button. Now that you have created a file called “watermark.png”, you need to add it to your photo album. To do this, open your photo album and select the “Photos” folder in the top left corner of the window. Then, select the “Watermark Photos” folder and click on the “+ Add Photo” button next to it. Now, enter a name for your watermark and click on the OK button. Now that your photos have a watermark added, you can use them in any document or website that needs images with a watermark present.