You can use group services to allow multiple people to sign up for the same event, such as an instructional class or a pop-up.
Manage group services
You can create and manage group services by navigating to Manage > Group Services. To learn more about group services, check out this support article: Manage group services.
Reach out to your client list
If you're hosting a special event, you could also send an email to your client list, to let them know more about the event. You can read more about sending marketing emails in this support article: Customize Your Email Notifications.