@PPC1901 Although you can prepare returns for your family members, the TurboTax Online edition can only be linked to one account. You can also share your login credentials if you feel comfortable doing so, but both parties will have access to each other's personal data and returns.
A desktop version of TurboTax can be installed on up to three Windows OS devices if you have purchased one. Another member has to log into your Intuit account and download it from there. They will have no access to your returns and vice versa.
