A LAN Area object lets you manage WAN traffic for servers as a group rather than individually. Each WAN policy you apply to the LAN Area object is automatically applied to the servers belonging to it. A server can belong to only one LAN Area object. If the server you are adding already belongs to a LAN Area object, the server will be removed from that object and added to the new object.
Launch NWAdmin.
Chooose the server you want to add to the LAN Area object.
Right-click and choose Details > LAN Area Membership.
Using the Browse button, find and click on the LAN Area object you want the server added to.
Click OK in the Select Object dialog.
Click OK in the LAN Area Membership page.
Repeat Steps 1 through 6 for each server you want to add.
To apply a WAN policy to the LAN Area object, thereby applying the policy to all the servers in the group, see Applying WAN Policies.