Add additional email field to "General" tab

How do I add an additional email field to “General” tab?

Hi, @Violet_Baker. You can only add fields to a custom fields tab. Unfortunately, you can’t modify any of the default tabs.

Most home buying couples have two different email addresses, it’s ridiculous that there’s only one field for email address. But yay, there’s a field for a fax number? Gee, another reason to look for another CRM.