Different Pin Or Password For Lock Screen & Sign-in Screen?

I am wondering if it is possible to have a separate Pin or Password for the lock screen and sign in screen?

For example:
My Microsoft Account Pin and Password is known to more than myself in my home. I do not want to change the Microsoft Account Password. If I change the Pin at the lock screen, others can just use the Microsoft account Password instead.

What I wish to do is lock my computer and when presented with the lock screen, have the Password for that different than the sign in screen. The only option presented at the first lock screen is either a Pin or Password.

The computer will be doing things in the background while it is locked.

Is it even possible to do what I want?

I believe the PIN is tied to the User's password and probably also the Microsoft Account and can't be split. Changing your password shouldn't be an issue except in remembering it then set up either Standard Account for others to use without a password or create new Users with their own Microsoft Account. There are always issues with privacy or user access when having only one computer. I had a couple of clients that pretty regularly called with infections and they cured it by getting their children their own machines, cheaper in the long run than paying a tech for help.

Thank you Burton for your help.