Those delivering dishes know precisely where to place them.

They note who ordered what so that runners are able to deliver dishes to the right person.

They were unsure where to deliver dishes and vague about ingredients.

Those delivering dishes have no idea who ordered them.

The fellows delivering dishes from the kitchen had no idea who ordered what.

Additionally, the people delivering dishes hadn't a clue where they should be placed.

The runners delivering dishes didn't have a clue as to who ordered them.

Those delivering dishes haven't a clue as to who ordered them.

At all times, runners delivering dishes hadn't a clue where to place them.

He delivered dishes from the kitchen but did not know who ordered them.