When you are doing Sidney's photo-shoot, you need to build up her libido first. You can build up her libido by choosing to end the photo-session early. Once her libido is high enough, she will be open to accept the first 3 (I think) options. And each of those options will give you submission points, each time you play the event.I like to know this too. I'm stuck in game because I really don't find this.