How to add a non-existing Social Profile?

[Feneroin]

Hello

I want to add a Google PlayStore app link with PlayStore icon in "Social Profile" setting and naturally at the footer of forum. I can't add via Admin Panel, because there is no an option to add it, so how...? Which files i can edit and in which folder i must upload the icon and icon sizes?

 

Thanks advance

[WP V0RT3X]