After you’ve logged in, you’ll see an area labeled Text Font listing all the fonts needed in the template. Click the "Attach Clip" icon and select the corresponding font files on your hard drive (they must be on your computer).

In the General tab, go to the Font Files field. Click "Add file" and select the fonts (.ttf or .otf files) you want to use. The fonts must be on your hard drive (they must be on your computer).