I have a non-profit that runs an event once a month where the users leave their cars at home to walk, bike, or ride public transit for their daily commute. I'm testing the online registration function of CiviCRM to allow them to record their transit method and mileage for that day, but they need to be able to update the record in case their method changes. For example, if they said they were going to ride a bike but instead took the subway because of rain.
If they attempt to register twice they'll get the message that they're already registered. If I allow multiple participants, they can record a new route but they show up as multiple entries with the same name (obviously).
I can't seem to find a configuration setting to allow registration updates. Am I missing something?