The size of a coffee maker is important in a small office. Due to differences in coffee tastes, many offices use single cup Keurig coffee makers.
Very small offices where employees seem to have similar tastes in coffee are often fine with a standard 12-cup coffee maker. A thermal carafe style coffee pot helps coffee stay a proper serving temperature for longer periods of time. Some offices might want two coffee makers if some employees drink decaffeinated very often. Commercial style restaurant coffee makers sometimes have two carafes so that both decaffeinated and regular coffee can be made and kept warm.