@Planman315 What version do you have? You need Turbo Tax Business to do a 1120 S return, not to be confused with the personal Home & Business program.
Turbo Tax Business is not available to do online or on a Mac. You can buy the Window version here. And you can have both TT Business and TT Home & Business (or any personal version) installed on your computer at the same time.
https://turbotax.intuit.com/small-business-taxes
