msteigy

Hello, I would like my users to be able to duplicate events in the submission form from the eventscalendar https://elternbildung-aargau.ch/events/community/add.
I understand, it should be possible with duplicate post, I understand, I have to put duplicate_post_clone_post_link() in my loop but: what exactly is it, what I have to do? I speak german and my english finishes at this point.
What is a loop an where is my loop?
I would be very glad to get a manual, showing me the way.

Thank you, Tobias. Everything worked out well but: impossible to save the changes. “Connection interrupted” (Verbindung unterbrochen) with Safari, Explorer, Firefox an Google chrom.
What can I do? Is there an other way, may be with FTP?

Regards, Marianne