Perform the following steps:
- Open the Group Policy Management Console (gpmc.msc).
- In the left navigation pane, expand the Forest node.
- Expand the Domains node, and then navigate to the domain where you want to link the GPO.
- Expand the domain name.
- Navigate to the OU where you want to link an existing GPO.
- Right-click the OU and select Link an existing GPO… from the menu:
- In the Select GPO window, select the GPO you want to link from the list of available Group Policy objects:.
- Click OK to link the GPO.