Changing site users' passwords
To change site users' passwords:
Log in to the site's control panel. You can use auto login to do this.
Go to the change password form for users.
In the New Password and Confirm New Password text boxes, type a password that meets the password requirements.
Click Save.
The user's password is changed. If the user is currently logged in, they are logged out when they attempt any action. To continue working, they need to log in again using the new password.