Hello Branquet,

Thank you for expressing interest in the Amelia plugin.

We have API, but unfortunately, we don't have documentation for it, but you can inspect request/response HTTP headers in our Lite version.

You can check these routes:

For fetching entities: /wp-admin/admin-ajax.php?action=wpamelia_api&call=/entities&types[]=locations&types[]=employees&types[]=categories&types[]=custom_fields

For fetching time slots: /wp-admin/admin-ajax.php?action=wpamelia_api&call=/slots&locationId=[LOCATION_ID]&serviceId=[SERVICE_ID]&providerIds[]=[PROVIDER_ID]&group=1&persons=1

For booking: /wp-admin/admin-ajax.php?action=wpamelia_api&call=/bookings

For notification after successfull booking: /wp-admin/admin-ajax.php?action=wpamelia_api&call=/bookings/success/[BOOKING_ID]e.g. 

Booking made with ajax request:

<script>
jQuery.ajax({
   type: "POST",
   url: "/wp-admin/admin-ajax.php?action=wpamelia_api&call=/bookings",
   data: JsonData,
   contentType: "application/json; charset=utf-8",
   dataType: "json",
   success: function(data){},
   failure: function(errMsg) {}
});
</script>

Hello Branquet,

Thank you for reaching back out to us.

"Group=1" means that when booking from the front-end, the customer will also have the group appointments displayed as available. This is how it is by default, except on the back-end where when you create a new appointment, it cannot be created at the same date/time as the already existing appointment for the same employee.

Hope this helps you.

Please let me know if you have any other questions.