Try as I might, I have been unsuccessful in creating a changed password for one site only, leaving others all the same. I've created a new account with the particular site in it, and gone to the extended tab and added a modifier. The next time I try to log in to that site, PWM uses the Default settings, not the new account settings.
Whatever I try either doesn't change the PW for the intended site, or changes them all. Is there a step by step procedure you can point me to?
Dave