Images are imported via URL. E.g. http://www.myimage1.com/297233.png in the ‘Images’ column. Dropbox (or similar services) URLs also work. (To get the Drop box URL, upload your image files into Dropbox, click the image and ‘share link’).
Preferably URLS should be direct image URLs instead of general webpage URLs containing images but Xpress Lister will read the largest image (by image size not area) from a webpage and use that.
To import multiple images, separate the URLs by commas.
You can add single images directly in Xpress Lister and rearrange the order of existing images