Explanations:
The Diwan-i-Insha department was responsible for the correspondence and communication of the Sultanate. It was headed by the Dabir-i-Khas who was the chief secretary and the personal assistant to the Sultan. Barid-i-Mumalik was the department responsible for the postal system of the Sultanate. Amir-i-Dad was the department responsible for the administration of justice in the Sultanate. Wakil-i-Dar was the department responsible for the management of the royal household.