The Sobayonin officer in domains are generally selected from at least Kyujin (lower-ranked one of the upper class retainers) or upper class retainers ranked at moshitsugi (or toritsugi) (an official for conveying a message).
諸般の側用人は、少なくとも給人（上級藩士の下位）または申次（取次）以上の上級家臣の出自から選ばれるのが一般的だった。