Changing your password can be done through the user profile section. To change your password, you must be logged in. If you've forgotten your password, contact firstname.lastname@example.org and they will get back to you with instructions for changing it.
After you've logged in, follow the steps below:
1) Navigate to the "My Profile" section
In the top right corner, click your name and a drop down will appear. Select the "My Profile" menu item
2) Navigate to the "Change Password" tab
Within the "Profile Account" portlet select the "Change Password" tab.
3) Type and Retype your new password.
4) Press the "Change Password" button.