Dear Francesco,
This happens in all course formats as they only exist on the 'course' page, the modules such as lesson are shown on the 'incourse' page, so you have to use the drop down combo box you can see in your screenshot.
G
This happens in all course formats as they only exist on the 'course' page, the modules such as lesson are shown on the 'incourse' page, so you have to use the drop down combo box you can see in your screenshot.
G