Hi Khaled,
You are almost there. Turn editing mode on and click on the wheel for the week '26 February - 2 March'. At the bottom you need to enable "override period duration" and set this particular period to two days. Save and hide the weekend in the main course page. Then the user will only see the shorter weeks without weekends. You need to do this for every other section as they will be the weekend sections.
With kind regards,
Hartmut
