Make a "Shopping cart" concept with different items

Hello everyone,
I have two types of users on my site, call the first user A and the second user B.
1_user A can upload images to a database collection,
2_user B can see these images, he can also create a folder and add specific images (like a shopping cart, but the products here are the images),
3_user A can now see the folder names and their contents in a repeater.

that’s it, i hope to get some help from you guys im really stuck.
Thank you :slight_smile: