Closing Registrations Early

Normally, registrations are allowed up until the actual start time of the class.  You do, however,  have the option to close registrations a number of days prior to the class and hours.  To do so, first you need to enable the feature in your Site Settings page:

Then when you schedule a specific class or edit a class in Upcoming Classes, you can indicate how early, in days and hours before class start day , that you'd like that specific class closed.