No one's in charge of it, per se! c: Simply log her interacting with them! For the most part, these events are all just free-for-all ideas of things that players can do over the timeskip, or handwavedly say their character participated in. Some events, such as the White Hart Yule Hunt or the Tourney will have set winners if there's enough interest; the means of those wins will be described in the posts themselves.