Sometimes, you need to follow up with an attendee after an event. Here's how:
Select your event by looking for it in the Event Calendar or searching for it in Special Events. Under the Related tab in the Registrants related list, find the Registrant you want to follow up with. Click the Registrant ID.
Create a task for a Contact/Lead, related to the Registrant. Assign it to the user you want to complete the activity. See how to create a task. You can also log an activity, if it has already been done. Example:
