You can add external attendees to your Event without requiring them to acquire an Event ticket. This allows you to add non-members into an Event, in case you want to invite external speakers or add more attendees to your Event for free. To do this:

1. Go to your Event and click on "Event Details" at the top.
2. From here, scroll down to "Event Attendees" and press the gear ⚙️ button on the corner.
3. Select "Add External RSVPs" and fill in the text box with the addresses you wish to invite to this Event for free.