To create a tile displaying an icon pointing to one of the social platforms:

• choose the "Icon" tile type
• set the tile "Size" to a small value (as eg. 0.4)
• enter the Font Awesome icon representing the platform into the "Content" field
• choose the appropriate tile "Background" color
• add the URL of the link pointing to the platform
  

Facebook: Content:fa-facebookBackground:#3B5998 Twitter: Content:fa-twitterBackground:#00ABF0 Instagram: Content:fa-instagramBackground:#F74F30