multiple booking for Appointments+

I'm creating a site for a hair salon. For clients that come in for a coloring, the stylist does about 30 min of prep work with the client, then puts them under the dryer for 30 min. After the client is done under the dryer, the stylist does another 1 hr of coloring work. The stylist would like to use the 30 min while client 1 is under the dryer to see another client. Not sure how to set that up with appointments+ I've tried the padding setting, but that only saves the total time, it doesn't give another client that 30 min time slot. Any ideas?
Thanks so much.