Hi, I'm using the Citadela DirectoryPro theme to create a business directory for a major city. It says you offer FontAwesome Category icons but the available icons in the WP theme are a bit limited for my use case.

How can I change, add new icons, upload my own icons or use the full range of FontAwesome icons available here:
https://fontawesome.com/icons?t=categories#categories

Please advise, thank you.