Adding WinPE 5.1 to DS 7.6

Good afternoon everyone.

Is there any documentation (or steps) on how to install WinPE 5.1 into DS 7.6?  I have installed the Windows ADK for Windows 8.1 Update and applied the WinPE 5.0 to WinPE 5.1 as stated on the Notificaiton/Symantec Console.  I click back on the Preboot Configuration and the second step (Click here to import Windows ADK) is greyed out.  I have attached an image.

Any thoughts on what Im doing wrong?

Thanks