Do not use Google DNS, OpenDNS or any other external provider as they compromise the security and stability of the system.
Configure DNS in Windows 10: https://support.microsoft.com/en-us/windows/change-tcp-ip-settings-bd0a07af-15f5-cd6a-363f-ca2b6f391ace#1TC=windows-10
Configure DNS on Mac OSX: http://rootear.com/os-x/cambiar-dns-mac

It is recommended that all computers on the network have a fixed IP assigned to them. In case your company has Novohit installed on-premises, they must be from the same server segment.