To delete the existing session type in Bytebeam console,
1

Access Settings Tab

Navigate to the Settings Tab by clicking on your username at the top right
2

Go to Session Types Tab and Initiate Session Type Deletion

Navigate to the Session Types tab and click on the trash(🗑) icon against the target session type
3

Fill Details

Enter the session type name and click on Submit button to delete it.
When a session type is running, it cannot be deleted until it is stopped.