Let's say you want to schedule multiple services into one single appointment. Although that is not possible at the moment, what you could do is create an independent service that includes all the services you want for that single appointment.

For example, you as a provider, want to schedule a 30-min session of yoga and a 30-min session of pilates in one single appointment for a client. What you can do is create one service that is called "Yoga+Pilates" that includes both services.

That way, you can add that one specifically to your appointment.

See below!