At first, they were the members of Shonagonkyoku, which was the office of Shonagon, but later, they began to have their own office called Gekicho, which was called Gekikyoku later.
初めは少納言の事務所である少納言局を構成していたが、外記庁（後には外記局）と呼ばれる独自の事務所を持つに至った。