how can I add another turbo license code to my existing turbo tax account?

[xmasbaby0]

Please explain.  You do not need, nor can you use, more than one license code for 2024 desktop software.   Buying another license code will not give you five more e-files to get past the IRS limit of five.   

[VolvoGirl]

Why do you need a second program on the same computer or in your account?   The Desktop program can prepare unlimited returns and efile 5 for free. And you can use any version. All the desktop programs have the same forms. You just get more held in the higher versions.

But you can activate a second program. Under Help - Switch Product - Activate new product. Don't know what that will do or what benefit you will get. Don't think it will allow you to efile more than 5 or get a different free state program.

Or explain more what you are trying to do?