In order to update your work address on your user profile, you must request this change from your expenses / payroll department.
The home address can be changed from your user profile screen.
In order for the home address to be changed by yourself the relevant access level must be assigned to your profile, again this can be requested through your expenses / payroll department.
To change your home address click the User Profile section as indicated in the screenshot below. 
Under the Travel Details section, you will see a green button to Amend your home address.
Enter your details and click Submit to save your new address. 