The primary button in the offer email leads back to the original event page. The plugin recognises the secure waiting-list token and:

• preselects the reserved appointment,
• prefills first name, last name and email address,
• locks the email address to the confirmed waiting-list entry,
• shows the reservation deadline,
• allows all remaining standard and PRO fields to be completed.

After submission, a normal pending registration is created. The waiting-list entry changes to registration_pending and the place remains reserved until the normal email confirmation is completed. After successful confirmation, it changes to accepted.