There is no way via the UI to duplicate an existing notification and run through the notification wizard to make modifications for it.

The use case is this. If you have one notification that you want to modify slightly by changing a service in rule filter, and the destination path to go to a different group, you have to create a new rule starting from scratch.

It would be nice to have a "Duplicate" button, that could create the new notification, and have all the fields pre-populated for you to run through the wizard.