What rights does an Indian father have to get a visa into the Uk, if his child has uk citizenship?

I have Uk citizenship. Our child has uk citizenship. Her father is an Indian national. What rights does he have to obtain residency / visa into the Uk to live and work here?

What is a VPN?

VPN is (Virtual Private Network) were first used by companies to enable their employees to securely access internal systems such as email remotely (e.g. from home or while on business trips). Today they are increasingly being used for personal use by individuals to protect their privacy while online in public places (e.g. when using the wi-fi connection in a cafe) or in a country where the internet is censored / blocked (e.g. China, Saudi Arabia…).