How to display clickable links from two separate tables under one field

Megan,

Make a Formula Rich Text field.  You can the build out simple or sophisticated set of links in that field.  You can use some HTML to build a table, colorize or otherwise surface the two links for your Users.    The Magic Buttons application from Kirk Trachy was full of great examples of how to do this.

A quick and dirty example is 

var text LinkOne = URL for getting to parent one;

var text LinkTwo = URL for getting to parent two;

$LinkOne   & "<br>" &

$LinkTwo

That will give you both links on two rows, in the same field.