How would you create a diagram that is laid out by the user, but the connections are routed by Nevron?

We are attempting to create a layout in which shapes are positioned by the user and then have an orthogonal type routing of connectors between shapes. What are the best ways of accomplishing this?

The first attachment shows the type of layout we'd like to achieve (Laid out through NLayeredGraphLayout). The second attachment shows what we are currently able to achieve with the use of the Routing Manager (Manually laid out).

We would like the lines to route orthogonally as is achieved by passing the diagram through the NLayeredGraphLayout without the layout engine moving the shapes.