Now get back to the Hierarchy.
If you click on the arrow next to "Main Prefab" you will see the "Main Canvas".
Click on it.
Now check the Inspector, down there, you should see the Main Controller script with its variables.
Let's see what each checkbox makes:
Loading Screen -> Enables the Loading Screen ( We will see how to configure it later )
Check Connexion -> Enables the Connexion Check, it forces the player to have internet connexion to use the app.
Show Time & Battery -> I think this one is pretty clear :D
Then, you can change the main Font of all the texts in the app by Selecting a Font and Pressing the "Update Fonts" button.
Awesome ! We are now done with the Main Canvas, let's now have a closer look at the Loading Panel.