We’ve always offered weekly, monthly and yearly recurring options. But we’ve now added options for every two, three, and four weeks and a Nth day option. So with the two, three and four week options they work like you might expect. When you add the event just set the date to the first occurrence. Then if you set it to reoccur every two weeks when the first occurrence passes two weeks will be added to the date. The three and four week options work exactly the same.
So what is a Nth day of the week? That would be like the 2nd Sunday every month or 3rd Wednesday in March. The Nth options are first, second, third, fourth and last. Then choose a day of the week. Last for the month you can choose every month or one month of the year.