In order to put appointments of posts (ninkan) under the control of the shogun, Kanto-bugyo (a commissioner of the appointment to an office) was set up in the shogunate, who acted as a contact for samurai families (buke), who applied for ninkan.
幕府では御家人の任官を将軍による統制下に置くため幕府内に官途奉行を置き、武家の任官の申請窓口とした。