Event campaign actions in vega provide a customisable event widget that you can easily embed on your website and link in your email communications to promote your event.
If you have not created your RSVP event yet, please see the article here to set this up.
Once your RSVP event has been created and published it is possible to make certain changes to this, before or after you start receiving registrations.
Firstly, access your event from Engage and click Undo Publish:
This will temporarily disable the campaign action from being available in the payment form but it will still be available to accept registrations via the widget.
Any of the configuration options can be edited here, except the event type, this will be greyed out and blocked from editing.
Once you have made your required changes to the event configuration, Save and Publish.