Hi Harry!
Thanks for reaching out to us!
First, let me apologise for the delay in getting back to you. It seems your post has fallen out of our radar.
Unfortunately, duplicating events is not a built-in functionality of our plugins. However, some users make use of the following plugin to achieve that > https://wordpress.org/plugins/duplicate-tec-event/
Please note that we do not own that plugin and we cannot provide support for it. I suggest you give it a try and make all necessary tests to make sure it works as expected.
We always suggest to setup a dev/staging site so you can test things out without disrupting the live site. We also encourage to make a full backup of your site, both database and files so in case something goes wrong you can always restore your site.
I hope that helps. Let me know if any follow up questions.
Best,
Victor