Here you specify the network zone that the UserLock Primary server will be in charge of.
All the machines in this zone will be listed in the agent deployment engine view ('Agent distribution view') of the UserLock console.
The wizard allows you to select this protected zone by browsing all visible Active Directory domain trees with trust relationship, and their organizational units. Please note, only Organizational Units containing computer accounts are displayed.
Select either 'All', the desired domain(s) or the organizational unit(s) and click on 'Next'.
This network zone can be modified later by relaunching the 'Configuration wizard' from the Windows menu ('Start/UserLock/Tools').