Hello

Here is two exemple :

1. one with Carbon module (http://get-carbon.org)
2. One wit h xSmbshare (From Pwershll Gallery)
   I assumed you have install the module

Ensure-DscResource
       (
           ConfigurationKey: Identity,
           Name: Carbon_Permission,
           Module: Carbon,
           Properties: %(Path:$DFSFolder,Identity:$Mydomain\$MyGroup,Permission:FullControl)
       );


Ensure-DscResource
   (
       Name: xSmbShare,
       Module: xSmbShare,
       Properties: %(Name:$ShareFolder,Path:$FoldertoShare,ReadAccess:$Mydomain\$MyGroup,FolderEnumerationMode:AccessBased,CachingMode:None)
   );

The Carbon example use as ConfigurationKey the property Identity while in the xSmbShare, the configuraitonKey is the default property (ie, Name)

I hope to not make a mistake and it will be useful.

Best Regards
PhilippeC.