When you start a new return, TurboTax will ask Do you have children or financially support another person? in the Intro section of your return.
Info about your dependants (like their birth date, their relationship to you, and their income), is used to determine your eligibility for certain credits and deductions, so be sure to enter this info accurately.
Here is a great TurboTax article to help you determine who you can claim as a dependent on your tax return.
Who Can I Claim as a Dependant on my Tax Return?
Please read our TurboTax blog on Claiming the Amount for an Eligible Dependant Credit | 2022 TurboTax® Canada Tips (intuit.ca).
Here is a TurboTax FAQ on how to enter a dependent into TurboTax.
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