Best way to add comments system to uploads

Hi there,

I’d like to ask the community for some advice on a project which I am working on.

So one of the functions of the projects is to have a page where students can upload their own-made movies and then admins of the site can review between each other.

I have taken care of the submission form and upload capabilities, and I’d like to know how I could provide a space on each submission/movie page whereby different admins can leave comments on each movie, generating a discussion on each one - comments should only be viewable on the submission for which they were added.

I realise that I would have to associate each commentID with its post(movie)ID but I’m not sure how to implement …

Any help would be greatly appreciated!