Upgrading your Pro event to an Enterprise event is easy.
All you need to do is go to the event you want to upgrade and click on the "Actions" button in the top right corner. Then click "Upgrade to Business Event".
All done! You will see your event has been upgraded.
Note:
Depending if you are on a package already or if you have paid for the pro event previously, there may be an outstanding charge you need to settle for the upgrade but you can do that easily by clicking on "Pay Now".
Event can only be upgraded when on a Pro Subscription, in case you just need to upgrade an event and are on per event, please let us know and we will be able to do it for you.