When we delete a recurring event, Assembled asks whether to delete "this event" or "this event and future events". Editing doesn't consistently work that way. If we change the duration or event type, you have the option to apply that change to "Just this event" or "All future events ". But if you add a participant, the recurring event is retroactively added to that agent's historical schedules.

Ask: Every edit to a recurring event, should ask "This event only" / "This and future events" / "All events", just like delete does.