Identity Safe. Sites requiring Log ins for different areas

I have an account with one website with the log-in details saved in Identity Safe. There is a different area of that website that requires another log in. Each time I attempt to add the new area log in it overwrites my existing log in. For example Amazon have the online shopping pages with one log in and they also have Amazon Associates area which requires another. The Norton help gives the following advice but I never see Option 4 onwards:

"To save additional logins for a website
1 Go to the webpage for which you want to save
another login.
Your login credentials automatically appear on the
webpage.
Securing your sensitive data 219
Accessing Identity Safe
2 Clear the login credentials that appear on the
webpage.
3 Type the new login, and then click the option or link
that logs you in.
4 In the prompt Do you want to replace your saved
Login for this site?, click Save New.
w You can see this prompt only for the first additional
login that you save for the same website.
5 On the infobar, in the Do you want to replace your
saved Login for this site? confirmation message
that appears, click Save to add the newly entered
login details.
6 Enter a reference name for the new login in the Save
as text box, and click Save"