Got to AD sites and services
⇒ Right click on Sites >> select New Site.
⇒ Give the site name and the select the Link Name >> OK
From the above picture, we can see a site called HYD listed.
Expand Inter-Site Transports >> Right click on IP >> New Site Link.
⇒ Provide a meaningful name to Site Link
⇒ Add site to the link.
We can move the servers from one site to other by just right clicking on the server and select which site it needs to move.