Only the Desktop program that you install on your computer can do multiple returns. For the Online version it is one return per account.
Online is only good for 1 return. But you can use the same email address for 5 accounts. How to start another return in the Online version https://ttlc.intuit.com/replies/3288574
You will have to pay any fees again for Online. Do not use your account or you will overwrite your return.
