Windows 10: does Microsoft Authenticator allow other ie my wife, to login to web sites?

How do I use Microsoft Authenticator so others, that I share web site access with, can log on? Do the others need to log into MY Microsoft account, or just have access to my password manager?It's a bit confussing.

:)

 

Windows Microsoft account authentication

I have a valid Microsoft account and a Windows 10 PC with Hello/PIN account login enabled. I also have the Microsoft Authenticator app installed on an iPhone and configured for the Microsoft account. Additionally, I have two step authentication configured
for the Microsoft account. With all of that said, I have become very exasperated while trying to unravel the various authentication paths (and their security implications) through this multi level login security scheme. I find the associated account security
documentation to be woefully inadequate. Thus, I would like to pose the following list of questions for starters.

1. Does Windows Hello/PIN amount to a two step verification login procedure for my Microsoft account?

2. Does approving a Microsoft Authenticator login attempt (without two step verification explicitly set up)

amount to a two step verification login procedure for my Microsoft account?

3. Does approving a Microsoft Authenticator login attempt (with two step verification explicitly set up)

amount to a two step verification login procedure for my Microsoft account?

4. If answers to both 2 and 3 are yes, then what does explicit set up of two step authentication do?

5. Does a coherent, comprehensive document explaining Microsoft account security configuration exist somewhere?

6. If the answer to 5 is yes, wherer is it?

Thanks in advance.

 

Introducing Web Authentication in Microsoft Edge

Source: Introducing Web Authentication in Microsoft Edge - Microsoft Edge Dev Blog

 

Introducing Web Authentication in Microsoft Edge

Source: Introducing Web Authentication in Microsoft Edge - Microsoft Edge Dev Blog