Nimva 3 allows you to choose different Google Font Families depending on the sections of your site.
Navigate to Theme Options -> Typography -> Google Fonts Options
Here we can select Google Font Families for the following sections:
Body
Header Main Menu
Content Headings
Sidebar Headings
Footer Sidebar Headings
When using the Page Builder’s Custom Heading element, you are also available to use a Google Font Family to be used for that specific Custom Heading element, which will overwrite the Theme Options setting.