Share only one folder

I have a Mac Mini as my Media Server running 10.9. On my iPad and iPhone I am able to add the Mac Mini but it gives full access to all folders and I only want to have it show the movie folder on on my desktop so I can give access to my roommate without him being able to snoop through my entire computer freely. I tried many different combinations in “other” such as: /Macintosh HD/Users/Colby/Desktop/Movies and having no luck :frowning: suggestions? 

Is this is a stupid question not worth answering or does no one know the answer?

I believe the other path should actually be something like:

Mac-mini.local/Colby/Desktop/Movies