Mapping RegistrationMagic Address Fields to wp_usermeta

I am developing-testing my first registration form with RegistrationMagic (RM) (Free version). The Address field provided by RM provides 7 sub-fields, e.g. Street, Apt, City, State and so on. In the Advanced settings for the RM Address field is the option to “Add Field to WordPress User Profile”, then you can indicate “Don’t add to user profile”, “Associate with existing user meta keys”, or “Define New User Meta Key”.
What is unclear is how RM will know which of the Address elements are to be mapped to the existing user meta keys or when defining new user meta keys, since there’s only one setting which covers all sub elements?