It indicates the staff that worked in Kanga (government office) of the Imperial Court such as Wakadokoro (office of waka), Goshodokoro (office to maintain books in the Imperial Court), Kirokujo (land record office), Infumidono (the retired emperor's documents bureau), Goin and so on.
朝廷の官衙である和歌所・御書所・記録所・院文殿・後院などにおける職員を指す。