As a software developer, I have access to several AWS accounts, and because I'm one person, I use the same username in these different accounts. The login form solicits Account ID, Username, and Password. I'd like to store in the Firefox password manager the credentials for multiple accounts that share the same username, but when I enter the account id, username, and password for a new account when the username matches on another account, I'm prompted to Update the password rather than Save it. Unfortunately, Amazon doesn't give separate URLs for logging into the different accounts. I think I've seen on some sites that Firefox can distinguish different accounts of the same username based on other fields in the form. In this case, I'd like the Account ID to distinguish different credentials. Is what I desire possible? Is there a way to configure it without a software update?