Is there a way to change what text is included in a highlight? For example:

Without deleting the highlighted section and creating a new highlight, can I change the highlight so that it only covers the words "We will know"?
The reason is that I have highlights attached to notes, and I want to change the highlighted text to which the note refers, without deleting and making a new note with a new highlighted section.
Related to this, is it possible to change a note's attachment from a REFERENCE to a highlighted SECTION? I have some notes attached to a reference, and it shows up in every book that includes that reference, but I only want it attached to the reference in one particular book, say the NASB95 for example.
Thanks for the help.