The Modify function can be found in the Password menu. This function modifies an already existing password from the password list.
The Modify function is only available when a single password is selected from the list.
The Modify password dialog box is very similar to the New password window. Here you can change the password's information. For more details on the Modify password dialog box go to Add new password.
After making the desired changes to the password, click OK to make these changes permanent or click Cancel to keep the password the way it was.