When you are creating a course (Seeing Adding Courses for help if needed), you will have the option to make it a Range or Continuous Course
A Continuous course is used if you are intending to have students taking the course at various times a year and you don’t want to specify exact due dates for the assignments. If a course is set as continuous, it will automatically set due dates for assignments based upon a student’s enrollment date.
For example, say John Smith enrolls on September 16th and Jane Doe enrolls on Sept 20th. If John’s first assignment is due September 21st, Jane’s first assignment will be due September 25th.
A Ranged course will have a specific Start Date and a specific End Date. Buzz will not automatically set a due date for assignments as it does in a Continuous course. This means that you will have to specify exactly when an assignment is due. For information on how to set due dates, see the Editor Tool > Scheduling section.
Once you click Create you will then see the course listed on your Courses page.