You are able to determine if you want to use the lights in the current iClone project, or if you want to use the default light provided by Indigo to render the entire scene. If you want to add additional lights from iClone for rendering in Indigo, select one or more lights, determine the desired sizes of the lights, and then export them along with the project to Indigo.
Lights in iClone
Adjust lights before exporting to Indigo
Lights in Indigo