I almost named this Section "The DM's Corner"... Okay, so I came into _2300 AD_ out of AD&D, and there aren't any DMs in this game (unless you're referring to Die Modifiers, in which case, there are lots of those)! There are, however, Directors or Referees, and their jobs are much the same as the DM's were: To plan out an adventure, paint the background, create the NPCs met along the way, handle the action, and make all of the above both interesting and believable. Quite a task!
This page has some essays on "my" theories of how to do things, such as quick random (N)PC generation and equipping, using the Standard NPC system that 2300 provides, vs. my own slower "NPPC" system, and when to use each, other Character Aids, Helpful Hints, some suggested Rules Additions, and a few miscellaneous Scenario Hooks, etc. If you are already a Referee, I can pretty much guarantee you that you will not like everything that you see here (surely you'll find something to disagree with!), but leaf through these articles, anyway, and you may get some ideas that you can use!