Atgal    How to enter the window before the lesson: for example, a Physical Education lesson takes place in a stadium that is far from the main building and it takes time to get there


You can enter the subject “Window”, and make lessons of this subject, with number of “Window” lessons per week equal to number of lessons of physical education.

Specify that these subjects (window & physical education) must go together in a particular order: first window, followed by physical education.