Hi, @Dlh4ck54w

In TurboTax Online you can only e-file one federal return per person or married couple per account (up to 5 state returns per federal tax return). You would have to make another TurboTax Online account for another household member. If you used TurboTax desktop software, you can prepare as many returns as you want for your household members, but only five (5) can be e-filed.  More info here.