Change Your Windows Login From a Password to a PIN Number

I tried to change the pin back into a password, but it didn't work

How do I change my PIN into a Password ??

Thank you.

This is a BULLSHIT LIE ! I have 3 computers 2 desktop 1 laptop ALL R the same - on laptop now. When you click on [ windows hello pin ] there is NO add! ONLY options are change / forgot pin number!!