Ele não será exibido, a menos que você esteja executando as edições Enterprise / Datacenter do Windows Server 2008 R2. Isso, no entanto, não importa em 2012 R2.
Do artigo do ADCS: NDES Wiki :
One major difference between Windows Server 2008 R2 and Windows Server 2012 is that starting with Windows Server 2012, the NDES role service is available in all Windows Server 2012 versions. See the AD CS Overview article for the table that shows the AD CS roles that are not available in some Windows Server 2008 R2 versions. The important point for this article is that Windows Server 2008 R2 Standard, Web Server, and Foundation editions do not support the NDES role service. Further, installations of Windows Server 2008 R2 using Server Core do not support NDES. Since Small Business Server (SBS) 2011 is based on Windows Server 2008 R2 standard, the NDES role service is not available on that platform either.