The Gyojisho came into existence in the Daijoe (first ceremonial offering of rice by newly-enthroned Emperor) and so on in about the middle ninth century, gradually grew into a functionality-oriented project team in various regular/temporal rites and festivals, and dealt with general affairs of rites and festivals including supplying necessary goods.
行事所（ぎょうじしょ）は、9世紀中頃に大嘗祭（だいじょうえ）などに現れ、徐々に恒常・臨時を問わず様々な行事に設けられた機能性を重視したプロジェクトチームであり、必要な物資の調達を含む行事事務全般を取り仕切る。