After you select a stating template, you will be in the Code Editor. This is where you add code to the Alice project.
In the top left panel you see a small view of the scene. There is also a button to Setup Scene. Click that button to add objects to the scene, setup the starting position, change the camera angle and do other design time tasks.
Notice that there is a button in the top left panel to Edit Code. You will be using these two buttons to toggle back and forth between the Code Editor and the Scene Editor.