To maintain/edit a currency locate the record and press Edit.  On the edit screen there are two tabs available.  The Currency tab will allow you to edit the symbol being used and the rounding rule.  The Currency Details tab will allow you to add or remove denominations associated to the selected currency.  Edit the information as needed and press save to commit your changes.

Please note that if a JDEdwards Rounding Rule name is specified on currency settings table (F590011/FQ67011) then Rounding Rule is applied to Grand Order Total to get what we call Cash Rounding Total. Cash Rounding Total indicates the total amount that must be fulfilled if using cash.