Does anybody out there know how to set up a calendar entry that is relative to the DAY of the week? I have the new IOS 7 Version on my IPhone 5S and looked high and low for a "custom" button. Only option I can find is a recurring "monthly" choice, but that won't get you a calendar entry that is every 4 weeks on Thursday. Perplexed. Other than that, as a reformed Blackberry user, I am LOVING this new phone!