To follow the prescribed order or routine; to stick to established procedures.
部、班门类，次序；就归于。按照一定的步骤、顺序进行。也指按老规矩办事，缺乏创新精神。
晋·陆机《文赋》然后选义案部，考辞就班。”
He preferred to work creatively, but his boss insisted on doing everything 按部就班.
Learn the next connected idiom: 按部就班 (àn bù jiù bān) → 班门弄斧 (bān mén nòng fǔ)
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