The role of a DH is the true backbone of any ship/base in STF. A Department Head is in charge of a particular section and any junior officers therein.

For example, the role of Chief Engineer places that person in charge of the ship/base's engineering department and, by default, gives them the responsibility for maintaining the working order of the ship.

A DH is a supervisor that organises their department most effectively and efficiently to do the job that is required daily, as well as interpreting any special requests or orders from the Commanding Officers.

Think of yourself as a bridge. At one end, you ensure that your junior officers have plenty of routine tasks to do to keep them busy in keeping with the normal routine of your department. At the other end, you are responsible for facilitating and implementing the orders of your superiors. They will tell you what they want done. It is your job to interpret that and to pass it onto your own staff.