Hello @BunmiA0 !
Thanks for coming to the community! In order to do what you are looking to accomplish here, we do have a couple of options that will get the job done:
You could set up a second primary fee for the add-on in your existing event, but registrants would need to use another email address to register with.
Or, you can set up a secondary event registration page to host the add on and link to it on the landing page of the first one
Either option will allow you to do what you're looking to do with your event, the second option would allow your registrants the smoothest way to register for this second fee as they can still use the same email address to register. Please reach out if you have any additional questions on this, we're always happy to help!
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