Yes, you can select all the images you require by clicking on the image and then a tool bar will appear which will allow you to add in the quantity required for these prints. Note, if you had already added different quantities for prints individually and you choose to update the quantity for all of the prints you have selected, this will reset your quantities for that individual print. Once you have made your changes, you can select deselect all to continue reviewing your prints. Your quantity selection will remain.