In the latter half of the Heian period, when Emperor Goichijo celebrated his coming of age, FUJIWARA no Yorimichi was dismissed his Sessho post and was appointed to Kanpaku, and it was proclaimed that he should become Jun-Sessho.
平安時代後期、後一条天皇の元服後に摂政藤原頼通が摂政を辞任して関白に補任され、同時に准摂政の宣旨を受けた。