No different to any other operating system. Select DHCP, go to the router, make sure DHCP is enabled and set an address reservation of that device/MAC address. We've done this before.I can't say, I don't know Win10. I can say I am unable to offer any help. It is however definitely the case that the more recent the version of Windows, the more hoops one has to go through (in general) and the more hidden things are from the non-admin user.