Final answer:
The District constituting the seat of Government of the United States appoints an individual as a Deputy Disbursing Officer according to Congress' direction.
Step-by-step explanation:
The District constituting the seat of Government of the United States shall appoint an individual as a Deputy Disbursing Officer in such manner as directed by Congress. In addition, the president has the authority to nominate individuals for vacant positions in federal departments or agencies, including positions of Deputy Disbursing Officer.