For NoteCaddy Basic users, please see the article Resetting NoteCaddy to factory settings
For standalone or paid HM-App users, click file->reset notes.
This will remove all NoteCaddy notes, CaddyScatter
data, and aggregate statistics from your database. To create notes again, find the "start" panel (usually right under where it says File) and click the top link "create notes for unprocessed hands baed on active definitions"
This is usually done as a troubleshooting tactic as well as to remove large amounts of unwanted data quickly and easily