A description of the benefits of creating a replica group is available in "Centralized Management," in Choose a Management Style earlier in this guide.
To create a replica group for centralized management of multiple WSUS servers
Install WSUS on a computer at a site where it can be managed by an administrator. Follow the steps in Run WSUS Server Setup earlier in this guide.
Install WSUS on a computer at a remote site. Follow the steps in Run WSUS Server Setup earlier in this guide. When you get to the Mirror Update Settings page during WSUS setup, enter the name of the WSUS server from step 1.
Repeat step 2 as necessary to add additional WSUS servers to the replica group.