1. Right click on "DHCP" and than "Add Server".

2. Now you can add the server. You will not see the new DHCP Server in the list of authorized DHCP server because we didn't authorize the server yet.

Mark "This server:" and click "Browse".

 

3.  Now you type in the name of the server.

4. When you entered the name click "Check Names". When the wizzard found the server, click "ok".

5. Click "ok" and the server will attached to DHCP MMC.

6. Now you should see both DHCP Servers in the list.