2 of my children receive disability tax credit, how do I claim for it on my taxes?

When using TurboTax Free, click on the heading titled Deductions.  Scroll down and click on Claims for Dependants and select it.  Answer Yes to the question, "Would you like to review or claim any of these credits?" and click on Continue.  Click on Enter Credit Info next to your children's names.  Put a checkmark next to, "Disability amount transfer" and click on Continue.  You will be prompted to claim the disability tax...