There are numerous opportunities for group instruction on merit badges that are available throughout the Atlanta Area Council and beyond. The best resource for locating these events is Meritbadge.info.

Since group instruction has its own set of challenges, there are resources on that website to help you put on a quality merit badge clinic, and to evaluate the quality of events that are available for your Scouts to attend:
How to Conduct A Merit Badge Clinic
Merit Badge Clinic Quality