Create a new network for them to share.
- Click on Folder in Task Bar
- Rt Click on This PC > Properties
- Advanced System Settings > Computer Name
- Change next to Rename this computer or change its domain or workgroup.
- Create a new name to enter into Workgroup > ok
- Reboot computer
- Do this to each computer you want on your network.
- Type cmd in search bar
- Type ipconfig in both machines
- Type ping and the other machines IP v4 address to see if they can see each other
- Done