Thank you StephaneD for using the Customer Support Forum.
Here are the steps to the solution:
The Shared Phonebook is used for LANFax in order for it to be used on the Global Print Driver follow the steps below.
The address book file must be located on a shared network location. For example, if you have a shared network drive that all of your computers are mapped to, this address book file would need to be on that drive for the shared address book feature to work. Basically, put it in a folder and share it out on the network and browse over to it . The pc that has the phone book/Fax address book would always need to be on the network.
I hope that helps.
I am able to send fax from desktop machine with printer driver (send word document by fax for example).
But, I want to share a phonebook for all people of my company (see picture... Sorry French windows).
I can't find any information about how to do that.