The prescribed number of personnel in the Nara period is unknown, but it was 100 for each of the Left and Right Otoneriryo (Bureau of Imperial Attendants) at the time when Naiju system was abolished from 806 and 810 and 120 at the time of reestablishment from 810 and 824.
定員は奈良時代については不詳だが、大同の廃止時に左右の大舎人寮に内豎を各100名ずつ振り分けたとされており、弘仁の再設置時に120名であった。