Setting up and using this add-on is very simple. As soon as you have installed and activated it, a new tab within Tickera Settings will appear. When you click on Custom Ticket Fonts tab, you will be presented with the simple interface like the picture below describes:
Now, head to Ticket Template option. When the page loads, you will be able to select your custom font from Font dropdown menu (shown on the picture below).
NOTE: Please make sure that the folder tickera/tcpdf/fonts is set to be writable as that could cause errors when trying to upload new fonts. Also, some fonts may not display properly.