Happy New Year

I'm asking the question here as I am fearful to ask in the W10 group
as I may not understand the answer :-)

I was persuaded by Microsoft to change to a PIN rather than a password
to log in (supposedly more secure). In my User account I still have
the option of PIN or password, which seems to me a less secure
position. How do I remove the password and make login by PIN only?
Does this require administrator rights?