You can either install the font on the server operating system, or you can add them to the fonts folder if you don't want to have the font available to the operating system and other applications on the server.
On the server you can use the path to the fonts folder (default path is C:\Xerox\FreeFlow\Core\00000000-0000-0000-0000-000000000000\Data\Fonts) and copy the font file there, or you can use the [Manage Additional Fonts...] under "Optimize node > Embed Fonts If Needed" to upload the font to the folder from any client.
Where should I add additional fonts for Core to see when it needs to embed fonts.
Does the path: E:\Xerox\FreeFlow\Core\00000000-0000-0000-0000-000000000000\Data\Fonts work? Or is this the wrong place.