Creating a "Series" with Custom Entities

Hi, 

I have a custom entity that allows admins to create events or classes, for which people can register using another custom entity. I need to be able to create a "series" of events/classes that basically is a copy of the original event/class created, with different dates/times specified for each record. Is there a way to do this -- essentially create one event/class and clone that record, but specify the date & time fields to be included for each clone? Any help is greatly appreciated. Thanks.