To add fonts to a Connect Fonts library, select the library under Team Libraries and choose File > Add Fonts to Library. Select your folder of fonts and click Add.
Connect Fonts will add the fonts to the Team library. You can also add fonts by dragging the folder and dropping it onto the Team Library.
You can create sets and add fonts to each set in a Team library. Sets that are created in a Team library are visible to all users assigned to each Library.