While entering the dependant information (Interview) format, it has a field for "Federal Net Income (T1-Line236)". Who's number goes in there? My dependant's?

Yes, this line is for your dependant’s net income. If your dependant is submitting a tax return of their own, you can get this info from their T1 form. If they have income but are not submitting a tax return, you can enter what income they do have in that line. If they have no income at all, put in Zero, and answer YES when you are asked if their net income is Zero.