Select the folder contenaing your watermark image (1&2) and click open (3)
Select the image that will become your watermark (1) and click open (2).
Select the position for your image (1), select opacity (2) and click ok (3)
Click on convert to convert/watermark your images.
Your pictures are now being watermarked, click ok when finished.
Double click on the folder containing your watermarked pictures.
Double click on any picture of your choice to verify your work.