After you schedule your webinar and invited panelists, you can add attendees. Add attendees individually or import multiple attendees from one or more CSV files.
Sign in User Hub, then click Webinars.
Select your webinar from the list.
In the Attendees section of your webinar information, click Edit.
To add attendees one by one, click Add attendees, then enter each attendee's name and email address.
To import multiple attendees from a CSV file, click Import attendees.