Children and grandchildren of influential persons were allowed to enter denjo no ma in the capacity of Kodoneri (Minor Officer) based on the Oni system (the automatic promotion system in which the persons at the age of 21, whose parents are from Imperial to the fifth rank or whose grandparents are upper than third rank, are conferred an Imperial title).
また、摂関家などの有力者の子や孫は蔭位に基づく小舎人の資格で昇殿が許された。