Custom registration questions can now be shown only to attendees who arrive through an affiliate link.

When you edit an attendee field, open the Visibility section and enable Only show from affiliate links?. Leave the affiliate picker blank to show the question for any affiliate link, or choose specific affiliates when a question should only appear for selected partners.

This is useful for partner campaigns where you need extra context from affiliate-driven registrations without adding more questions to the standard checkout flow.

For setup details, see Creating Custom Registration Questions.