To customize the registration form, go to Event > Setup > Registration Forms
The form already contains: Name, Surname, e-mail (required)
To add more fields:
Choose from predefined fields, by clicking on the corresponding check-box at the first column.
To mark a field as required, click on the corresponding check-box in the third column.
Click Save to save your form.
Custom fields and questions
Click Create Field to create your own fields and questions.
Instructions and text
To add instructions or other text you can create a custom field of type "Separator" and drag it to the top of your form.
To set the order of each field, drag and drop. Click Save to save your changes.
To preview your form, click View or Preview