Hey @adele-rochon,
Here's some documentation around the scenarios where you can claim someone as a dependent, vs. when they need to file their own taxes.
Depending on your scenario, you may have the option to include them in your report, or file their taxes independently.
If you'd like to get some further advice on how to proceed, you can also consider using TurboTax Live Assist & Review where you can get unlimited help and advice from a real person as you do your taxes.
Feel free to follow-up if you have any additional questions!