If you are using the "Online" tax software, you must create and entirely separate account (UserID and Pwd must be different).
IF you attempt to do it in the same Online account, then you will irreversibly destroy whatever data is already in there, and make it unrecoverable.
___________________
Only the desktop software allows you to prepare multiple tax files from the same software set for yoru family members......no matter what, only 5 can be e-filed..and any extras needed would require you to mail-filie them on paper.
____________*Answers are correct to the best of my knowledge when posted, but should not be considered to be legal or official tax advice.*
