Hey again icraftzone,
As I mentioned above, the only thing out of ordinary that you need to set up is Capacity option which you will set to 1 so you prevent booking the same location at the same time with both providers.
Aside from that there is no need for use of shortcodes, you can create make an appointment page that will have shortcodes from settings page in Appointments -> Settings -> General -> Display Settings -> Create an Appointment Page by checking the checkbox and saving changes after, https://screencast.com/t/SPfCwm7X.
You’ll also need to create two services for your two locations and two service providers for your representatives.
All other options are matter of preference (working hours, payments, notifications..).
You can find more information about how to setup the plugin here https://premium.wpmudev.org/project/appointments-plus/#product-usage
Hope this helps ??
Best regard,
Bojan