Repeating events can recur Every Day, Every Week, Every Year. Select the appropriate frequency from the Repeat list.
To set an event to repeat at another interval, e.g. every 2 weeks, select Other..., then specify how the event should repeat. Repeating events can continue forever, or you can specify an End Date.
Day: repeat every day, or every 2, 3, etc days - including weekends.
Week: repeat every week on the same day(s).
Month: repeat every month, or every 2, 3, etc months.
Year: repeat each year, or every 2, 3, etc years.