Express Software Manager Help
How to discover machines
To discover machines and users on your network, do the following:
From the Administrative Console's Tools menu, click Discover Machines and Users.
Specify the type of discovery (Active Directory or NT Domain)
and click Discover.
You can also limit discovery to specific organization units (OU). See the online help that accompanies the Administrative Console for details.
You’ll see a message in the status bar of the Administrative Console when the discovery process is complete.
Note: In order to use the discovery feature, you must use either Active Directory or domains on your network, and the machine that runs the Express server must be part of the Active Directory or domain.