Creating Org Charts in Omnigraffle 2 for Ipad

Greetings,

I have begun working with omnigraffle 2 for the iPad. Seems pretty intuitive. The one thing I have yet to figure out is how to quickly create an org chart. Anyone use it effectively for creating org charts? If so, care to share your approach? I want an approach that is fast so I can use it real time during meetings.

Thanks!

Eric