You can easily upload font files you wish to use in your theme, giving you the option to work with any font you have available, for instance all of Google Fonts library or your clients custom typeface.
To upload one or more fonts, first click to select Font Family for any of your typographic styles, then click the green Upload-button.
Drag and drop any number of font-files to the designated area. The system will automatically detect weights and styles for the new Font Family added, and once confirmed, the new Family is available when selecting Font Family.