It provides auto filling the appointment form from a request post and get
Mandatory attributes are
"id_form" (identifying technical form)
"page" (the xpage name), its value is always equal "appointmentfilling"
static attributes
"firstname": first name of user
"lastname": last name of user
"email": email of user
dynamic attributes
it is the generic-attribute attributes
syntax of the parameter name: attribute+id_entry_of_attribut