Can I help my child file their tax return on my turbo tax account? How do I do that if it's possible?

[VolvoGirl]

Online is only good for 1 person and 1 return.  To do another return  you need to set up a new account.  You can use the same email for 5 accounts.   If you have the Desktop program it can do multiple returns and efile 5 for free.    Sign in or start a new online account here,
https://turbotax.intuit.com/personal-taxes/online

If their only income is W2 and under 14,600 (2024) they do not have to file a return except to get back any withholding taken out. If they got a 1099NEC or cash that is self employment and they have to file for any amount.

Filing requirements for a dependent
https://ttlc.intuit.com/community/children-dependents/help/do-i-need-to-file-my-own-taxes-if-i-m-a-d...

Be sure on their return they check the box that says they can be claimed on someone else’s return.