After you have pressed save you will see the event will now be on the content tree and additional tabs will be added to the event page type to allow for more content editing
Navigate to the "Page" tab to add widgets to the event.
Note: you will need to add a "Form" widget to this page for a form to show up. Select the "workshop form" from the list and this will automatically work with the Google registration link added on the content tab. This will be used for the auto email that gets sent out.
The Google Form will be used to manage the event registrations / entries
Once the event is complete then you need to go to the "Workshop Form" in the "Forms" application to add the event to the user profiles in the system.
To do this: