Enabling Remote Desktop connections via Windows Server 2012 R2 Essentials

We recently deployed Windows Server 2012 R2 Essentials. I went successfully through the wizard to set up Anywhere Access and can connect to my servers secure page via the internet. If I log in as an administrator I can run a remote desktop session with the server by selecting the Device.  Log in as a standard user and I can access all of the servers shares and any file that user has permissions to access. As a standard user there are no "devices" available.

I have been unable to find where to enable devices. I have run across a few vague mentions of things like 'remote desktop connector'  software that should have been installed when the workstation PC joined the domain.  Perhaps my joining the domain the old way (Control Panel/System/Computer Name/Domain Change button) rather than using the new way with pointing a browser at my server may have lost some capabilities.

Using Server 2012  Dashboard/Users I checked the Anywhere Access tab selections and they look correct.  Allow Remote Web Access is checked as is Shared Folders, Computers and Homepage Links.  I believe on the Computer Access tab I should have a list of available computers to allow access to, but this list is empty.

As a test, I went to Active Directory Users and Computers/Computers and added one Win8 workstation to the Remote Desktop Users group, but still no computers show in the selection list.

Can this be done with Essentials?

If so, what step am I missing?