Currently, your course curriculum is locked as either a day-based curriculum or a week-based curriculum. You cannot currently change between these two options once the course has been created.
Let's make a new course together:
This is the day your course officially starts. If your course is set up with a weekly curriculum, then each week will be based on the start date. For example, if you start on a Monday, the first curriculum section will be 1 week long from Monday to Monday.
The End Date Is automatically calculated when you put in how many weeks/days the course is.
Adding New Curriculum Modules
You can easily add new curriculum sections to your course. To do this, navigate to your Course and click "Curriculum" in the left navigation bar. At the top, you'll find "New Curriculum Module".