One of the features of Group Policy Preferences is to do Item Level Targeting. This enables you to filter out your targets to specific items so that you can implement a Group Policy Preference on a higher Organizational Unit node in the Domain. What this does is a single declaration of your new Policy and have it filter down rather than creating a copy and then applying it to individual OU’s. You may also opt to use WMI filtering but sometimes a script can have errors.
I have an example here on item level targeting; a modified map network drive like the one that we did on part 1 but this time, we are going to only apply our mapping to everyone in an OU but would not apply if they are on a mobile computer. Smart huh?
To do that we need to go to the User Configuration, preference and then Expand Windows Settings. Right Click Map Drives and then choose new Mapped Drive.
So lets choose the action like the example on part 7.
Again, its really straight forward, just fill up some details like in part 1, but this time open the Common Tab.
In order to use the Item-Level Targeting, just tick the check box for it and click the Targeting… button.
Now we can create a target, in this case that its not logged on a portable computer. Just click New item, and choose Portable Computer. That action will add a new item on the list, click your "portable computer" filter and then click Item Options then choose Is Not. Click Ok and there you have it. Deploy Map Network Drives to all of those under the OU BUT is not logged on to a portable computer.
Go check out technet for more info on item level targeting here: http://technet.microsoft.com/en-us/library/cc733022.aspx