Adding social media icons in blog layout under theme options

I need to add extra social media icons to be displayed within the body of a page using the Avia Layout Builder and the Social Share Buttons element. I have read through previous threads and uploaded the two extra icons I need from Fontello. I have also added them in the Theme options under social profiles, and they have appeared perfectly in my header. But I can’t seem to get them into the theme > blog layout, so that I can add them in other places.

Please help!