If you are claiming child care expenses on your tax return and you are an Ontario resident, then you will go to the "Deductions" tab - "Child Care Expenses" to edit or enter the information required to claim this credit.
For more information on the "Ontario Child Care Tax Credit", please review this link.
I am a CPA and have used Turbo Tax to keep my family taxes off my firms server. Our family income exceeds $150K and I was surprised that the program gave us the full credit. I had to over ride the credit to nil. Very disappointed in the program as this is a basic test and we should not have to check to confirm we qualify for this type of subsidy.