The Non-Custodial Parent Income and Assets page will appear if you don't live with both of your parents in your primary household but you have contact with them. If you do live with both parents, please check that you selected "Parent 1 and Parent 2" for your primary household under the section "Part 1: Defining your Household(s)" on your Household page. Once you have included both of your parents under this question, you will no longer have access to the Non-Custodial Parent Income and Assets page.
For help on filling out your Household page, you can view our QuestTips video: