Magic links are the default and recommended attendee login method. If you also want attendees to be able to log in with their email address and a password, you can enable attendee passwords for your event.
To check or change this, go to Event Setup > Settings > Registration & Checkout. In Attendee Password Support, turn on Allow Attendee Passwords?
When attendee passwords are enabled, HeySummit creates a password after an attendee completes registration. If you leave Event-Wide Password blank, each attendee receives a unique random password. If you enter an event-wide password, completed attendees use that shared password instead. You can read more about that option here.
The login URL and password are included in the attendee welcome/registration email when a password is created, so make sure that email is published before launch.
If you need to resend a password manually, go to Reports > Attendees, click the ... menu next to the attendee, and select Resend Password. Resending is only available when attendee passwords are enabled and the attendee has completed registration.
To edit the email copy attendees receive, go to Emails > Attendee emails.
You cannot edit an individual attendee's autogenerated random password directly. If needed, use Resend Password to generate and email a fresh password, or use an event-wide password for the whole event.
For more detail, see our articles on customizing emails and how attendees log in.