1. Login to your Bridge.
2. Browse to the page containing the items without pictures.
3. Roll-over 'Management' at the very top of your site. In the drop down, lower right, there is a Page View section. By default, you're viewing "Shopping" layout (4 items per row).
4. Click on "Edit" View. Now, the page will show the item vertically with the option to add pictures.
5. Load pictures to each item. The page will automatically refresh after you load each image.