Coordinate system offset


I want to export a dgn from revit and insert it into another dgn-file. My problem is that the cs-origin of my model is also the origin of the file, that I want to insert it into. I want to give an offset to it, to make it fit into its right position.

Can I somehow (directly in Dynamo) give an offset to the origin of my cs to make it fit into the right position of my second dgn-file?
I thought about adding another cs (Cartesian coordinates) in the very beginning of my dynamo script, so that all the geometries will be moved by that offset. I also want to be able to give an angle to the offset so that my model can also be rotated (on the xy-plane).

I would be grateful if you could help me out here.

Best regards, Heiko