In store turbo tax

[tgivens08]

The in store turbo tax allows two people to submit tax documents. Is this not available with online processing?

[jerry2000]

When you use Turbotax Online version, you can prepare only one return per account/payment. This Turbotax help topic tells you how to start another return:
https://ttlc.intuit.com/questions/1894512-how-do-i-start-a-second-return-in-turbotax-online

That is a fundamental difference between the Turbotax Online version, which you access through a web browser, and the CD/Desktop version which installs and runs on your home computer.
With the CD/Desktop version, you can prepare as many returns as you wish just for the price of the box.

[VolvoGirl]

Sorry No.  Online is different.  It is one return per account.  But you can use the same email address for 5 accounts.  To do another return you have to set up a new account and new user name and pay any fees again.  And there are other differences too.  Actually the Desktop installed program can do unlimited returns and efile 5 for free.

How to start another return in the Online version
https://ttlc.intuit.com/replies/3288574