You can grant access to your Contacts folder to other users. The user may then subscribe to your Contacts folder. The access permissions range from being able to read your Contacts folder, to allowing another user to create, modify, or delete contacts.
Right-click the Contacts folder you wish to share and select Properties.
The Contacts Properties window appears.
Select the Permissions tab.
Enter the user's ID and click Add, or click Search to search for users in your Address Book directory.
Choose the permission settings when the user's ID is highlighted.
The available permission rights are:
Read only
Read and write
Read, write, and manage
None
You must select at least read only in order to share a folder with another user.
Click OK to delegate access to your Contacts folder to the specified user.