If you want your company to have an easy way to access the company’s Contacts, Users, Rooms, Distribution Lists you will have to create and map an Address Book Policy to all Exchange users.
Execute the following commands in Powershell to find out your existing lists:
Oce you find out what your lists are, run the following command:
New-AddressBookPolicy -Name "Contoso ABP" -AddressLists "\All Users","\All Contacts","\All Groups","\All Rooms" -OfflineAddressBook "\Default Global Address List" -RoomList "\All Rooms"
See if the ABP was created:
If it was created now you can go and enable this policy on specific users.