Appointments+ Multiple Bookings for Multiple Service Providers

I would like to do something this in Appointments+:

1. Client A books appointment with Provider A at 2:00pm, Wednesday.
2. Client B books appointment with Provider B at same time and day as in 1.

I am trying to set up Appointments+ and currently when #1 happens, it also makes that time slot for Provider B unavailable. This seems like it should be a basic function of the the plugin. Otherwise, what's the point of having multiple providers?

Thank you.