Pay attention: this project is for developers which have strong skills on vTiger customization.
VTiger [url removed, login to view] allows to import separately ACCOUNTS, LEADS and CONTACTS by .csv files. Is not allowed to import events data (calls or meetings information regarding account, lead or contact).
I have an excel file that contains leads data and events data (info regarding sales appointment with each lead). All in one file.
I need to customize vTiger to have a button to import all those information (LEADS and relatives MEETINGS data).