This page provides details on non-natural lights available in V-Ray for Revit.
V-Ray for Revit supports IES lights in the project. If V-Ray cannot find the IES light files in any of the search paths, it uses a generic IES file that shines light equally in all directions
V-Ray for Revit supports enabling and disabling light groups in the Revit. Light groups are reached by going to the Rendering Settings in the view properties of the view you wish to render, and clicking on the ‘Artificial Lights’ button. This button is only enabled if the lighting scheme is set to a mode with artificial lights enabled.