Why do you have "client information" in TurboTax? If you are using TurboTax to prepare tax returns for paying clients, you are violating the license agreement, and probably also violating IRS regulations for paid preparers. TurboTax is only for do-it-yourself consumer use and cannot be used by paid preparers. Intuit (the company that makes TurboTax) has three tax software product lines for professional preparers: ProSeries, Lacerte, and ProConnect. You can find information about all three product lines at the following link.
Intuit Professional Tax Software
You also need to educate yourself about the security requirements for paid preparers. You might want to take a professional education course on the subject. Here's a link to some information from the IRS.
Protect Your Clients; Protect Yourself: Tax Security 101
