Doc, even when the Homegroup is not used and you use Home or Work network location (Windows 7) and Private (Windows 8 & 10) you shouldn't need to do anything else than to enable sharing on each Windows rig as shown in this screenshot (from Windows 7, the same settings apply for 8 & 10):
(The last highlighted item: you can of course also select Password protected sharing ON, as you wish. I have it OFF in home network.)
When done, network shows all computers:... with access to shares on each, here the shares on a Windows 7 Ultimate desktop seen from a Windows 10 laptop:There's no need to create any networks, that's automatic as long as all computers belong to same workgroup and subnet. I'm using Windows firewall on each rig, third party firewalls might need some settings changed.