Folks tend to be career copy editors. New hires may have chosen editing. They are slowly integrated into the desk. Responsibility comes only during an absence due to vacation or illness. Copy editors take their cues from the city desk editors who basically listen to what the managing editor wants to lead with.
All copy editors lay out their own assigned pages.
People go to other papers or professions when they leave any desk at this paper. Headlines could also be improved. Photo captions are apparent weakness. From early 20s to late 50s. Range is from less than 2 years to 22 years.