curl --request POST \
  --url https://api.{tenant}.getomneo.com/api/v3/appointment-definitions/{appointmentDefinition}/available-staff \
  --header 'Content-Type: application/json' \
  --data '
{
  "location_id": 123,
  "date": "2023-12-25",
  "available_only": true
}
'

{
  "data": [
    {
      "id": "<string>",
      "first_name": "<string>",
      "last_name": "<string>",
      "email": "<string>",
      "has_available_slots": "<string>",
      "is_default_location": "<string>",
      "appointment_definition_staff_sort_order": "<string>",
      "location_profile_sort_order": "<string>"
    }
  ],
  "meta": {
    "appointment_definition_id": 123,
    "location_id": "<string>",
    "date": "<string>",
    "requires_staff": true,
    "customer_must_select_staff": true,
    "selection_required_by_customer": true,
    "assigned_staff_required": true
  }
}