How do I unlock the gallery, I have no idea which one I have to do to find the tapes, is it security office or Nightclub?
Security Office; usually one magazine that will unlock a gallery scene will appear once a night, find them in the rooms when checking through the camera.
What do they even look like?
The magazines are red and black colored, almost like a book, at least it was when I completed it a while back
Thanks to your answer I've gotten every single gallery
Make sure you have the h content on or they will not appear