I purchased Turbo Tax Download and have downloaded it onto my desktop Where do I enter my Redemption code?

See this TurboTax support FAQ for entering the license code when installing the desktop edition software - https://ttlc.intuit.com/turbotax-support/en-us/help-article/license-information/install-turbotax-cd-download-software-license-code/L1wFOSXur_US_en_US?uid=m9g83f8a

Are you on Windows or Mac?   I installed on Windows 10. Didn't get to enter the License Code until the end of the install.    After I downloaded it.....

Had to go to my Downloads folder. Clicked on downloaded .exe file. It started but stopped saying I needed Microsoft Visual C++ with an install button. I clicked on it and it installed the MS Visual C ++. Then it continued to install Turbo Tax.

Checked on the License Agreement. Clicked on Install. Minute later it was done and launched.
Sign in to Intuit Account, had to get email code to enter.
Got License Code screen. Went and copied 16 digit code from email and pasted it into code box.
Got into program.