Release : 3.4.x
Component : PRIVILEGED ACCESS MANAGEMENT
Increasing the length of Password Minimum Length in Settings > Global Settings > Password page will be applicable to local users only.
If you have existing local users that the password length lesser than the new setting, the following User Information dialog will be prompted when the local users log in. Users have to change password so it is compliance with the new password minimum length setting before they can login.
However, this setting won't impact LDAP or Radius users.