Diagram Style: Align parent to first child?
 

Here's the thing. I've mostly succeeded in creating a diagram style, in which the root of the hierarchy is at the left, and its children are in a column at the right. The root is connected to the children by orthogonal lines. The lines emerge from the root at the same place (middle of the right face), the vertical parts of the lines line up (appearing to be a single line), and they go into the middles of the left faces of the respective children.

I figured out how to do all of this, and I saved it as a diagram style.

Okay, but I'd like the root object to align with the [I]top[/I] child. The first child is to the right of the root, and each succeeding one progresses to the bottom. The attached PNG shows the effect I'm looking for.

I don't see how to specify that in the style, nor how to make it stick in a document: If I align the root as I want it, then add a child in the outline, the root slides back down to the middle.

Is there a way to do this?

OmniGraffle Pro 5.1.1

Unfortunately the Graphviz layout engine just doesn't support what you're after here -- In fact, this looks a lot like a traditional tree structure layout, which we'd like to be able to add at some point in the future.