After filling out all tax return myself, Will turbo tax live sign my return after the review? Or I have to upgrade it to full service?

Last year, there is no full service, so with the live product, I can ask the reviewer to sign my tax return.

But now it seems I have to add $100 more to get the full service version so that the reviewer can sign my tax?

I feel better to have CPA signed my tax. But I also want to understand and have more control over it all myself. So I want to fill it out first.

However in full service, the additional cost, is to ask the preparer to fill it out for me, So I hope the live version itself can also sign my return after I fill this all myself with no additional cost.