If you have an S corps, you need to be using TurboTax Business desktop download on a Windows computer---which would only be on your own hard drive.
https://turbotax.intuit.com/small-business-taxes/cd-download/
Or you can use online Live Assisted or online Live Full Service TurboTax Business. If you use an online account, the account is accessed via your account and user ID. If you choose to share that information with someone else, then they can access your online account.
https://turbotax.intuit.com/personal-taxes/online/live/business-taxes/
https://turbotax.intuit.com/personal-taxes/online/live/full-service/business-taxes/
**Disclaimer: Every effort has been made to offer the most correct information possible. The poster disclaims any legal responsibility for the accuracy of the information that is contained in this post.**