Path: Login into your Eventdex account, Expand Event Settings tab under the event you are hosting and then click on Display Settings.
Step 1: In display Settings, Include Registration page Widgets, PromoCode check box is OFF by default. To display promotional field in registration page check mark the box and save.
Step 2: Click on ‘Save’ button to save the changes.
Click on ‘Cancel’ button to exit display settings edit page without saving changes.
Step 3: The Promo will display on Registration page.