How can I customize the repeats in a calendar event?
How do I customize the repeat mode in Calendar?
iPad Air Wi-Fi, iOS 7.0.1
The are limited options when adding an event to the built-in calendar, as shown on the Repeat field when setting up an event. If you want to create more complex recurrances you'll have to use a different calendar app that supports this, such as Week Calendar (https://itunes.apple.com/us/app/week-calendar-easy-powerful/id381059732?mt=8).