first i've looked after an alternate course-format, but i guess it is too much work to create several formats (like bidaily, biweekly, etc.)...
maybe it's easier to kill dates? (not just hide with the eye-icon)
i could create a course weekly and kill all those dates i'd like to and at the end my students did only see the real course. with all dates and with the real number of meetings.
even an add-button would be nice for those courses with very different times.
that would be finde but moddle is very fine, yet