You can change your Briefcase Launcher configuration by holding down the control key whilst launching Briefcase.
This will bring up the configuration dialog where you can replace the active user's email address, the account ID or also the host address used to connect to Briefcase.
We recommend against making changes to this area unless directed by a support team member, as the fields entered in this configuration are essential to ensuring you can access your Briefcase account.
Once you’ve made the required changes hit save. If you have entered the details correctly, Briefcase should launch straight into the login screen.