As you already know - after installation you can configure main settings of an addon directly from "list of modules". Just press the configure button to open configuration page. This section contains only basics settings related to libraries that module uses. In context of icons definition process - this section is not important.
Main configuration
This section has two options only. As you can see on image below:
Include FontAwesome library to front office [yes/no]
If your theme does not use FontAwesome icons library - enable this option. Otherwise "font awesome" icons that you can define with this module will not appear. If your theme uses font awesome - you do not have to enable it. Module will use your theme's library then.
Include FontAwesome library to back office [yes/no]