TT Online is only good for 1 return per account. If you preparing for friends and family, try TT desktop instead. It can handle multiple returns and can efile up to 5.
Compare TurboTax® 2020-2021 CD/Download Tax Software Products (intuit.com)
TT is not licensed for use by paid tax preparers.
[edit] If, however, you mean 5 different tax years, please post back.
