In January 1868, seven branches Jingi, Naikoku, Gaikoku, Kairikugun, Kaikei, Keiho, and Seido were placed under the three posts so that the three posts and seven branches administered the government for the time.
慶応4（明治元）年1月には、この下に神祇・内国・外国・海陸軍・会計・刑法・制度の七科を置いて三職七科とし、当面の政務に当たることになった。