Review of adding sources to your source box.
As a big part of todays assignment you are to
connect those sources in your source box to the ancestor that source relates to.
THE VIDEO DOESN'T EMPHASIZE THE POINT
THAT YOU START THE ATTACHING THE SOURCE TO THE ANCESTOR IN THE TREE BY FIRST GOING TO THE ANCESTOR IN THE TREE,
THEN GO TO THE SOURCE BOX,
THEN ATTACH THE SOURCE TO THE ANCESTOR.
FOLLOWING THIS PATH MAKES SURE YOU CONNECT THE SOURCE TO THE RIGHT ANCESTOR.