ADD Custom fields in the "PROFILE FIELDS ADDON"

Hi guys, hope you are well. I had a great day!
I have some trouble with personalization of custom user fields.
I enabled "Profile field addon" in the Membership 2 Pro plugin, and now I can see some extra fields. But now I need to add some extra fields like "address", "Vat number" and "zip postal code" in my user profile (optionals), but I don't have these options in the Membership 2 Pro add on. I don't want to have these extra field in the registration form, but only in the profile page, because are optionals. Can you help me? thanks in advance Rosa