Anyone can host an event in the community and it does not have to be Grifball related. Events have been run for alternate game modes such as Smashball or Hockey and even in other games entirely such as Fortnite or Rocket League.
To run an event, all you need to do is make your own thread with a date and the details. Join the discord and advertise it in the events channel, if you don’t advertise it in the discord then you won’t get a response, this community lives on the discord.
If you have a suggestion for a type of event and can’t run it yourself, feel free to post here and in the Discord!