I'm trying to use OmniGraffle to arrange seating locations in certain buildings. I have objects representing the buildings, and I have objects representing the people sitting in the buildings. Is there any way to specify "anchor points" for objects? So when I drag a name object onto a building object, it anchors the name object to a certain spot on the building object?

I did a quick forum search, but didn't find anything that looked like this type of question. Thanks!