Although Oku-yuhitsu was prohibited from making any personal contacts with people other than Shogun, only Sobayonin (lord chamberlain) and Oku-yuhitsu could serve as Toritsugi (an attendant who serves Shogun by informing of a visitor and convey the message).
奥右筆は将軍以外の他者と私的な関係を結ぶことを禁じられていたが、将軍への文書の取次ぎは側用人と奥右筆のみが出来る職務であった。