When the same photographer produces all of the images of your location, you can save time by using a “blanket credit” that is applied to all of the photographs that you upload.
At the beginning of the upload process, you can add as many files as you wish. You can add the photographer credit to the Photo Credit field. When Upload is selected, all of the files that were added will automatically be attributed to the Photo Credit that you entered.
For photos that have already been uploaded, you will need to credit each one individually. See Editing a Location Photo.