Follow this example for the caraone.json file.  In a lot of workflows, not mounting the proxy and thumbnail can make a cleaner and faster installation.  Essentially you double up the \ in the path.  The example has "X.X.X.X" for the IP address of the server.  Set the appropriate IP address and UNC paths for your environment.

"Server": {

    "UserID": "nab20241",

    "EncodeBackendURI": "http://X.X.X.X:9091",

    "ProxyPath": "\\\\X.X.X.X\\Proxy",

    "ThumbnailPath": "\\\\X.X.X.X\\Proxy\\thumbnails1",

    "MediaPath": "/Volumes/MyDir/",

    "IndexingTimeout": 2.0