Make the event a Weekly Event and set the days appropriately by selecting all days or just the weekdays.

1. Add the Event as Type Monthly.
2. Set the Recurrence to Every Other.
3. Select the appropriate weekday.
4. Change to the starting date box and select a date that corresponds to the starting date for the event. The starting date must fall on the same day of the week as the Recurrence Type for the event.

The event will now be shown every other week, two weeks from the starting date.

Add an Event; set the Type to Annual. Set the Recurrence options as desired, i.e. first Monday, day 1, etc. In the months block choose January, April, July, October.

Add two annual events. On the first event, set the event for the 4th Wednesday and then select the months January-October. On the second event, set the event for the 3rd Wednesday and select November and December.

Add the event as a specific Dates Type Event and, in the specific dates text box, add the dates for each of your meetings.