I am in non-sequential mode trying to design coupling optics to fiber couple a Lambertian source into a 980um/0.57NA fiber.  After completing my design which consists of two even aspheric lenses, I want to perform a tolerance analysis.  In sequential mode there are many operands available to tolerance lens surfaces. How do I go about tolerancing the lens surface of each aspheric surface in non sequential mode?  What options do I have for lens tolerancing in non sequential mode?