There is a great little tool in Seraphim that allows the calendar coordinator to add recurring events "sporadically." This allows the coordinator to see a full calendar year and pick dates of the event by holding down shift to select a range of consecutive days or hold down alt, and click dates of the event. This is very helpful for events that take place on a weekly basis but are off some nights. I.e. we have a children's program that occurs every Sunday evening. In the spring, they do not meet four or five times. This allows us to display when the event will actually take place, and it's super easy to add the event to the calendar. When the only option to add a recurring event is with no "off nights," the habit is to schedule the event every occurrence of the year and the event displays on the calendar even when the event does not occur at certain times (ie. spring break).