I used TurboTax last year but don't plan to use it this year. I do want to file taxes for my children though. How do I navigate the site to do this?

If you filed your children's return through TurboTax Online, you need to log on to each of their accounts to prepare their returns. You can't use your account to file their returns; they each need their own accounts. If you haven't set up online accounts for them from last year, you can do it this year. But each return needs its own account.