How to add Company name as a field on a Sign up User Flow?

Question

Using Azure ADB2C Identity server.

How can I add a field for the "Company name" user attribute in a sign-up flow?

I see that Company name is a built-in attribute of a User in Azure ADB2C:

I already have created a working Sign up flow that is populating the First name, Last name and Job title attributes:

I would like to add Company name to the Sign-up form but I do not see the Company name as a "Built-in" user attribute available out of the box:

Should add a custom attribute? How to link it correctly to the built-in "Company name" user property?

Answer 1

Not all the fields shown on the screen are B2C user attributes.

As per this, "Company name" is not an attribute.

You could add it as an extension attribute.