Instructions
Navigate to to "My Xbox."
Choose "System settings."
Choose "Family Settings" if you do not subscribe to family pack and choose "Family Center" if you do subscribe to family pack.
Choose "Set pass code."
Choose "Pass code." Using the X and Y keys on your controller, input a four-digit pass code.
Input the four-digit pass code again for confirmation.
Select a code-reset secret question.
Input the secret question answer. This can be done by either using your computer keyboard or the controller.
Choose "Done."
Choose "Yes, save changes."