For best security its a good idea to change the Joomla Administrator password from time to time.Passwords for the Admins and other Joomla users can be changed in the User Manager.
Using the pulldown menus at the top of the Joomla Administrator go to:
Site > User Manager
Click the user name which will open User [edit]
- enter new password in the password field.
- enter the password again in the verify password field
- click the Save or Apply button at the top.
