Hi there, Torsten! Nice to see you again. 🙂
Good question. If the person who submits the event has a registered account on your site, then they can head to their list of submitted event and edit from there.
The URL for this might depend on the slug you’ve chosen for the Community form, but it is typically: [your-site]/events/community/list.
Unfortunately, this only works if the person has a registered account since an account is the only way to associate specific events with specific people.
Does this help answer your question? Please let me know. 🙂
Cheers!
Geoff