How to authorize a user through JS on the site login.microsoftonline.com?

Question

Microsoft

There was a need to implement automatic user authorization on the Microsoft website, let's say on my website the user will click on the button and js will automatically authorize using, for example, the login [email protected] and the password test.
That is, it is necessary that the test user be authorized on the device of the visitor to my site.
How to do it?