Thanks for your post! To add the files from the multi-uploader as a separate items, you might try the “add list” operator rather than “add,” which will add all entries of a second list (the album images) to an existing list (the images field). Let us know if that helps or if you have any more questions!
Not sure if this will help. I created this Tip post when I wanted to upload multiple photos and automatically assign them an icon and a category name. The post doesn’t go into details on the icon and category assignment, but it goes over how to upload multiple images
You would could use a backend workflow (assuming you have the files uploaded into the multi file uploader). I’d create a recursive backend workflow. Make sure your Key is ‘list/array’ and that when you trigger it you send the mulitfile uploaders value.