How do I change exercise or module?

The Meludia web application has 4 difficulty modules (Discovery, Intermediate, Advanced and Expert). Each module is composed of 8 stars, each star has 5 branches, and each branch has 5 exercises. In total, there are 625 ear training exercises in Meludia.
If you are in an exercise and want to go back to either change the module or the star, you have to click on the button on the left side of the screen.
This button will take you to your dashboard, where you can choose the module and star you want to work on.