Civilian Specialist

Many of the Federation's top minds and specialists in different fields aren't in Starfleet, they are civilians. These people often venture into space aboard Starships and other facilities. They maybe Doctors, Scientist, or even Engineers. They use some of the science labs, when possible, to do their work while not interfering in operations of the ship or facility. Starfleet's primary role is exploration, and having these people on board really helps that endeavor.