Get your taxes done using TurboTax

Thank you for answer. So, if I provide my username and password to my friend to install the program in her computer, please guide me how to proceed to install and start tax filling process. She still has to file her tax return under my account since she has to install the program in her commuter with username and password? or she has to login her turbo tax account to start filling after installation. Please guide me the process if you know. Thak you.