I have finally solved the problem. The settings are there n Windows 10 but not as easy to find as in Windows 8.1. apparently you have to go to PC settings not ZPC settings.
Click on manage networks.
Then you have to disconnect from the network then reconnect to it.
You will have to enter your WiFi password again to reconnect. Then where it asks "Do you want to find PC devices on this network-Select:
Yes for Private network or
No for Public Network.
So what I did was select yes then as you can see my network has now been changed to Private network as you can see from my pictures. Though it seems silly that you have to jump through hoops just to change your network. We never had to do this on Windows 7 or 8.
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