Your network contains a server named Server1 that has the Remote Desktop Licensing (RD Licensing) role service installed.
You install the RD Licensing role service on a server named Server2.

You need to move all Remote Desktop Services client access licenses (RDS CALs) from Server1 to Server2.

What should you do?

A.
From the Remote Desktop Session Hosts console on Server1, modify the licensing settings.

B.
From the Remote Desktop Session Hosts console on Server2, modify the licensing settings.

C.
From the Remote Desktop Licensing Manager console on Server2, run the Manage RDS CALs Wizard.

D.
From the Remote Desktop Licensing Manager console on Server2, run the Repeat Last Installation action.

Explanation:
You can use the Manage RDS CALs Wizard in the Remote Desktop Licensing Manager tool to migrate Remote Desktop Services client access licenses (RDS CALs) from one Remote Desktop license server to a Remote Desktop license server that is running Windows Server 2008 R2.

Source: http://technet.microsoft.com/en-us/library/dd851844.aspx