Champions League
Weeks run Thursday to Wednesday. Team Captains report their numbers on Thursday for the week just finished, and the leaderboard is updated shortly afterwards. Top of the League is crowned each month (October, November, December), and the overall Champions at the end of December.
Pick the week and the office, then type the numbers from the Team Captain's return in the "how many" boxes. The points are worked out for you, so check the four totals against the return before saving. Saving an office's week again replaces it, so this is also how you correct a mistake.