upload zip webfont fontawesome 6

Hello,
I am stuck, trying to add my own font-set. Currently asking myself what
structure the .zip has to have for upload.
Example: I downloaded free fontawesome 6 (https://fontawesome.com/v6/download) and I can use simple html to show icons. When I upload the complete fontawesome .zip with gridbox icon library, I get like 8 blank icon cards with the name of the webfonts folder files (.ttf, .woff2). That's it.

There are no details or a good example on how it works with your documentation. Would be thankful for any tips ;)
Thanx

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