VpiUaClntDemo.zip file contains the demo for the VpiUaClnt. 
This VPI give the agregation capabilities to the OpenOpcUaCoreServer.
This simple ZIP contains the file for release and debug. It uses an OPC Foundation UA server "QuickStart Data Access Server"
You can download it from the OPC Foundation website.
To run the demo :
 run StartServer_Release.bat for the release version
 run StartServer_Debug.bat for the debug verion

Both use the same configuration. Most of the configuration file are in the .\Config folder.

Feel free to contact me for more explanation.

I complete documentation will come soon.

Regards
Michel