Shortcode steps, display services, providers & locations

Hi there,

In the appointment page, I would like to do a few things things but I can't manage to do it with wpmu shortcodes.

I'd like to display :

1 - Services
2 - Providers
3 - Location

I would like to respect this order because the service chosen impacts the providers available & both features impact the places available.
I also would like these choices to be automatically updated at each step.

Thanks a lot!