When your clients login to book they will have the option to select a provider or choose no preference. No preference means your client doesn't mind which provider they get for their service. This section is to help you choose the order in which the providers for "No Preference" are booked. You have two options.
1. Select by priority: Once you have set up your providers you can choose the hierarchy of how the "No Preference" bookings are booked. Go to your Providers sections, then drag and move the providers in the order you wish the "No Preference" bookings to go.
2. Select randomly: The system will automatically choose at random which provider is available at the specific time of the booking.