Vtiger intergration and Bulk Accoutn imports

In the Managers Manual it states that:
When I did the integration, only users and groups were synched. How do I do the above?
VERSION: 2.2.0-209
BUILD: 90726-0153
- Bulk import Accounts into Vtiger, because the built-in Vtiger lead importer cannot handle large imports. This functionality must be done by a system Administrator
- Daily synchronization of Account details from Vtiger back into ViciDial
When I did the integration, only users and groups were synched. How do I do the above?
VERSION: 2.2.0-209
BUILD: 90726-0153