The faction had no specific single representative but adopted council system (nine standing committees were to be appointed according to Kenkyukai regulations in 1916) organized with multiple members called 'Tokumuin' (special committees) or later called 'Jomuin' (standing committees), but later, Keigo KIYOURA, a aide to Aritomo YAMAGATA, gradually became influential as a leader of Kenkyukai.
特に単独の代表者は置かれず、「特務委員」後に「常務委員」と呼ばれる複数の議員による合議制（1916年の研究会規則では9名の常務委員を設置）であったが、次第に山縣有朋の側近である清浦奎吾が同会の指導者として浮上してくる事になる。