Launch SEMP -> Enter Admin password
On the left hand side, Select Admin -> Then Servers
Select your server -> Click "Edit the Server Properties"
Click the Directory Services Tab -> Click Add
Fill in the IP and then enter the IP. Click ok. If it was successful, the box will disappear.
Next, click Admin -> Administrators (Just Click Administrators if your still in the Admin tab)
Click Add an Administrator
Fill in the information under the general tab. It is recommended that you make the username the same as the account in active directory.
Click the Authentication Tab -> Select Directory Authentication -> Select the server and enter the AD username. Click Test. If successful, everything is setup correctly.