Currently, users have to set-up notification settings separately for each event without the ability to edit the default notifications. Furthermore, when you copy an event, the notification settings don't copy, so you still have to set them up event-by-event.
Either admin should be able to edit the default event notifications, or we should be able to set one and then have them copy if we copy that event. Having to go through and edit the notification settings (including inactivating payment processed notifications for events with no payment!) for every event is painstaking.