in an orderly fashion

1. In a calm, well-behaved manner. Kids, please quiet down and line up for lunch in an orderly fashion! No one panic, just make your way outside in an orderly fashion. Passengers, please exit the train in an orderly fashion.

2. In an organized manner. Now that those picture frames are lined up in an orderly fashion, don't you think they look better? See, if you kept your Christmas decorations in an orderly fashion, you'd actually be able to find what you're looking for! We need to keep all this paperwork in an orderly fashion. Alphabetical order would be a good place to start.