If you're looking over the sign up list of an upcoming class, and want to know who the VIPs are or who needs special attention, you can give your teachers a heads up by tagging customers ahead of time.
Their tag and associated badge will show up next to their name ahead of time so its clear who's who.
To add a tag to a customer, click Customers > Customer List > choose your customer > click Actions > Edit Customers Tags > choose a tag or create a new one to assign.