Please follow the steps in our TurboTax FAQ: How do I claim the Canada Caregiver Credit?

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I have tried the instructions for the OnLine version but still my spouse does not show as a dependent when I try to complete the CCC section. 

@webbia To claim the Canada caregiver credit for a spouse in TurboTax Online, select My Info > [Spouse]'s Personal Tax Profile from the left side menu. Then click "Edit" next to Other credits & deductions. Scroll down to where it asks if your spouse has an impairment and select "Yes". Then check off the option for the Canada caregiver credit.