Why are settings missing from my PDF output options?

Hey, all! I'm a science-writer-turned-technical-writer. I'm a brand new RoboHelp user, training with some Adobe tutorials.
I'm a little concerned--several tutorials now have shown options I don't have when exporting a PDF. I'm missing settings from the Layout section, and there is just no Master Pages option. Has anyone else encountered this? Is there an easy fix?
