The application switcher allows you to switch between applications and environments. Bearer comes pre-configured with a started application "My App". The name can be changed in the Settings.
To switch environments or applications, select the application switcher in the sidebar. A dropdown will appear allowing you to select an environment or create a new application.
To create a new application, select "Add App". You will be asked to name the new application.
Application environments are set by the agent when it initializes in your application. See the docs for your platform's agent for details and how to set an environment name and details about the default values.
Each application uses its own unique secret key that is shared across all environments. You can find the application's key in the settings.