hi ..
1]
create a wizard city
2]
create a new scene in the wizard city project
3]
drag and drop the osm into the scene
4]
select all OSM data, MOVE it to the cartesian origin (zoom very far out and move the dataset to 0/0/0). you have to do this since the OSM data is georeferenced, thus far away from the origin.
5]
assign the wizard city rules to the shapes
6]
create the models.