Follow How do I invite someone off the waitlist? November 23, 2017 00:44 Help on ActivityHero Businesses Business Registrations & Refunds To invite someone off the waitlist, you can send them an invoice that they will pay online. Once they pay, they will be enrolled in the session, even if the number of available spots is zero. You can learn how to send an invoice here. 0Comments Article is closed for comments.