Hi there, Flemming! Thanks for getting in touch and welcome to the forums. 🙂
Good question. Unfortunately, there is no way to duplicate an existing ticket in the Event editor. I’m afraid that each ticket will have to be created individually.
That is certainly an interesting idea though and one I would encourage you to submit to our UserVoice forum, where we field new feature requests. I can see how that would be super useful to others as well.
I know this likely isn’t the answer you were hoping for, but does it help answer your question? Please let me know.
Cheers!
Geoff