Limit event reminders to event owner

Is there a way to limit event reminders to the creator of the event? Either globally or per event? As it is right now, everyone with write access to a given calendar gets any notifications added to an event on that calendar. Therefore, it seems like I’m faced with either:

  • Disabling write access for all other users and requiring them to sign on as a special user to add or modify events
  • Everyone’s e-mails getting flooded with every event the creator wants reminders for, even though it might only be the calendar owner or event creator (if not the calendar owner) that wants it

Happy to hack my instance of Nextcloud 20, as I won’t be updating to 21 before I deal with upgrading MySQL, which I don’t want to do right now.