To change your account Password or PIN, choose Account > Settings
To change your Password, click the Change Password button in the top right corner
Enter your Current Password, New Password, and Confirm your New Password
Selecting the Revoke Sessions Checkbox, will log out any users currently logged in with your Location ID
To change your PIN, click the Change PIN button in the top right corner
Enter you Current Password, New PIN and Confirm your New PIN
For information on the difference between a Password and a PIN, see What is the difference between a PIN and a password?
For information in setting a PIN timeout duration, see How do I customise my security settings?
To recover a forgotten Location ID and PIN, see How do I recover my Location ID and password?