How to repeat events on iPad calendar

On my Mac, it's easy to establish a repeating event for a specific day in the month from calendar. I am able to set up events to repeat second Saturday of the month, but I can't figure out how to do that on my iPad.

You can't directly create complex repeating events from the iPad itself. But you can create a custom event to repeat on a specific day in ical on your Mac, then sync that back to your iPad.