What Product Should I Purchase?

I have several events that have photos that will be taken by multiple photographers. I would to create a directory of the each event and have sub-directories under each master directory. I would also like to have a sub-directory for each photographer under the each event; however, I do not want the photographers to have access to other photographers photos. Is this possible? If yes, what Google product can I purchase that will allow me to achieve this goal. Thanks.