If you have ‘walk-ins’ at your events (i.e. people who are completely new to your organisation who are allowed to turn up), you can use Self Registration for New Guests so that those new people can:
turn up at your event
complete a form to provide you with their contact details (which saves their details in your Contacts)
complete a Self Check-In Form to log their attendance (which includes their attendance in Reports)
Get started with Self Registration for New Guests
Self Check-In needs to be activated on an event in order to use Self Registration for New Guests