Visit https://training.simmersion.com and click the "Use my organization's login" button. Enter your umich.edu email address when prompted and click through the U-M login screens you see. You will then be redirected to SIMmersion logged in to your new account. You will use the organization login in each time you need to sign in.
Please be careful not to register an account on the website using your umich.edu email address via the "Need an account? Register" link, as this will block access to the organization login, and it will not provide access to the simulations you need. If you previously created an account on the SIMmersion website with your umich.edu email address this way, for example during the MasterTrack program, you will first need to log in to the account, go to the account page and delete the account, before following the steps above.
If you have questions or are having difficulty, please feel free to email our SIMmersion team at: simmersion@umich.edu