To manage courses that you have applied, go to dashboard and click 'Courses Application' on the left sidebar.
System will display list of courses that you have applied previously. To withdrawn from the application, simply click on the ❌button on the right-side row. You will notice the status will change to 'withdrawn' after the button is clicked. To re-apply the course, click on the view button to go to the course page.
To apply for more courses, click the button on the top-right corner on the course table section.