Go to 'My Festival' > 'Manage' > 'Custom Submission Form'. Here you can require additional, custom information from all submitters.
With Custom Submission Forms, you can create any additional questions you like in variety of formats including text, paragraph, yes/no, dropdown menus and checkboxes.
You can access that tool by going to My Festival > Manage > Custom Submission Form.
Submitters will be required to answer any questions you add here. After they have submitted, you can access this information under the 'Custom Form' tab on the Project Details page of any submission.