If you need to file a separate Business return like for a 1065 Partnership or LLC or a 1120 including a Single Member LLC - S corp or a 1041 Estate/Trust return you need Turbo Tax Business in addition to a personal tax program.
You need to buy Turbo Tax Business, not to be confused with the personal Home & Business version. Home & Business is just for personal returns that need schedule C for self employment. TT Business is not available to do online or on a Mac. You can buy the Windows Desktop program here,
https://turbotax.intuit.com/small-business-taxes
You can have both a personal program and the Business program installed on the same computer at the same time.