Ichi no kami (Commissioner of the Market) as the head was originally an official equivalent to Shorokuinojo (Senior Sixth Rank, Upper Grade), but a person who accepted to have an appointment among governmental official of Goi (Fifth Rank) responsible for practical works, tokugyosho (student like postgraduate, student taking the graduate program) and monjosho (student of literary studies in the Imperial University) most of the time.
長である市正（いちのかみ）は本来は正六位上相当の官であったが、五位の実務官僚や得業生や文章生のうち成功(任官)に応じた者が任命されることが多かった。