If you plan to claim tuition transferred from a child or grandchild or other dependant credits, you must enter that person as a dependant in the INTRODUCTION section of the interview, under Dependants.
TurboTax transfers the information about your dependants to Schedule 5 - Details of Dependant.
Note:
A "dependent child" refers to your or your spouse's natural or adopted child, or other wholly dependent individual. However, the term "dependant" can include a much broader group of people.