After Miss Tyson, Mr. Brundage, and Mr. Bartlett had been fired and Mr. Munson had taken his hat and stalked out, mailing in his resignation later, old Roberts had been emboldened to speak to Mr. Fitweiler. He mentioned that Mr. Munson's department had been "a little disrupted" and hadn't they perhaps better resume the old system there? Mr. Fitweiler had said certainly not. He had the greatest faith in Mrs. Barrows' ideas. "They require a little seasoning, a little seasoning, is all," he had added.
What does seasoning mean here? I am sure it is not referring to spices used in cooking!
What does they need a little seasoning mean?