Hey Neonbrand,
I can’t see an icon menu on the page you’ve linked to – could you please clarify which filter you have in mind?
If you wish to emulate the square icons on the left as in the theme demo, please create one or more icon menu items in the “Icon Menu” tab of the Theme Options panel; more information on the icon menu and its filtering option is available in the “Menus” section of the theme manual.
Sincerely,
Andrii / Satori Studio