While most villages seem to post up missions and allow you to pick from them, Kumogakure is going with a system more like the actual system from the manga. In this section, known as the Mission Request Office, you will post IC entering the office and requesting a mission from the secretary. From there, either myself or the Co-Kage will reply with a mission for you. After given a mission, you have a week (7 days) to complete it. Should you fail to do so, you will be punished based on the importance of the mission along with having it marked on your record. These punishments can range anywhere from trash pickup to doing missions for free.
Please know that when doing missions, you are representing your village. As such, all missions are to be followed to the T.