I would like to edit an existing enumeration, but in the domain model I can only either select an existing enumeration or add a new one. Where do I edit an existing one?
You can only change enumerations in the Modeler. They are not meant to be interactive, that's what objects are for.
Edit: In the Modeler you can edit your enumerations at Resources -> Enumerations in the appropriate module.
Robert van 't Hof