The department that pays the bills and the salaries, collect the money and makes sure every cent is accounted for.
This department is responsible for selling the newspapers and making sure they are delivered to the shops or homes of the readers.
This department takes the small ads people want to put in the newspaper. They make sure people are charged the right amount of money and the page is all correct.
Someone needs to keep the system flowing smoothly
Display Advertising Department
These people are responsible for selling advertising space in the newspaper, like the big adverts you see for Louis Vuitton.