Add users to the Remote Desktop Users group
o Open Computer Management.
o In the console tree, click the Local Users and Groups node.
o In the details pane, double-click the Groups folder.
o Double-click Remote Desktop Users, and then click Add….
o On the Select Users dialog box, click Locations… to specify the search location
o Click Object Types… to specify the types of objects you want to search for.
- Type the name you want to add in the Enter the object names to select (examples) : box
- Click Check Names; When the name is located, click OK.
Notes : By default, the Remote Desktop Users group is not populated. You must decide which users and groups should have permission to log on remotely, and then manually add them to the group.(Particularlly with Enson ZC1080: Users, if created with EnsonServerSuite Management Center, are automatically added to the Remote Desktop users group, if imported or not created with EnsonServerSuite Management Center, should be added manually by following the steps above. )
To open Computer Management, click Start, click Control Panel, double-click Administrative Tools, and then double-click Computer Management.
Article source : https://technet.microsoft.com/en-us/library/cc758036%28v=ws.10%29.aspx