Here's how it looks when you enter two kids, but can only claim one as a dependent. Notice how next to Junior's name it says Dependent. And next to Mary's name it says EIC or dependent care credit only.
When you enter your childcare expenses in the Deductions and Credit section, TurboTax will ask you more questions about how many months "Mary" lived with you to see if you can claim those expenes.
I hope that helps. Please let me know if you have more questions. I know this stuff is tough. Good luck!
