1.  Navigate to the page you'd like to edit, and click edit page
2.  In the content tab, scroll down to the content blocks area
3.  Click add callout, then click link set - in content 
4. Add a title (The title is the link set header) 
5.  Add a label (The label is the subhead/description of the link set) 
6.  Click add item in the links box, then add the link name and link url  for each entry.