How to visualize DGN data on a Lightspeed view

Visualizing DGN data on a Lightspeed view is not supported. There is no layer builder nor a styler available in the API.

You can create a GXY layer for the DGN data and use the TLspGXYLayerAdapter to add that layer to a Lightspeed map, with all the limitations described in the class javadoc of the adapter.