按部就班
A place for everything，and everything in its place.

eg：No hurry, let's carry out the plan in apple-pie order.

中英俚语俗语来源：“文选·陆机文赋然后选义按部，老辞就班。”

同义词：井井有条 Keep everything ship-shape.
反义词：乱作一团 All in a huddle.