After SkIndigo has been installed, a small toolbar is added to the SketchUp user interface for easy access to commonly used export functionality from the menu:

Render with Indigo
Export the SketchUp scene to Indigo format and start rendering it in Indigo.
Render Selected Entities
Export and start rendering only the currently selected entities in your SketchUp scene.
Material Editor
Open the SkIndigo material editor.
Render Settings
Open the SkIndigo render settings dialog.