You can enter the credit by following these steps:

1. Sign in to your TurboTax Online return.

2. Go to Deductions.

3. Select Claims for Dependents.

4. Say "yes" to the question "Would you like to review or claim any of these credits?" 

5. Continue until you reach "Your children and other dependants."

6. Click "Enter Credit Info" beside the child you want to claim the credit for. 

7. Select Children's Sports and Arts Tax Credit (provincial credit only) and enter the eligible expenses.

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