Sanni, who was higher than goi (Fifth Rank) in the rank, worked full-time in Sanniryo and among people lower than rokui (Sixth Rank) in the rank, those who were in Kyoto did bunban (shiftwork) in Sanniryo, and the others did bunban in kokufu (provincial office) and helped the other government officials and attended to their business as messengers.
五位以上の散位は散位寮に長上（常勤）し､六位以下のうち､在京のものは散位寮に分番（交替勤務）し､他は国府に分番して､他の官司の手伝いや使者としての事務を行う。