Organized courses

Hello, Our client needs to offer a series of courses every month; for example 4 courses in January, 2 in February, 2 in March, etc. Our client does not want the students to take all the courses at once, but one month at the time. What we did was to bring the courses for January life and keep the rest on draft mode for now. So they are not available to the public. Are there any other recommendations you might have for this? Please, advice   Mrs. Yola