Point and click retrieve newly created record from a popup

If the person name does not exist in record lookup of name field of a new record.  I use a popup to create the new name field.  How can I populate the newly created name in the underling new record.?  See video
https://docs.google.com/file/d/0B409lhd9sYDcc3o2OUl3Ymx4dTA/edit?pli=1