Are only the Sustaining Member full-time (FTE) employees allowed to use the discount codes and Lighting Library logins?

No, the Sustaining Member designated contact controls who receives the discount codes and Lighting Library login information. Each Sustaining Member level has a fixed number of simultaneous logins, 10% discounts, and free webinar registrations available to them. IES will not provide the discount code information to anyone other than the Sustaining Member designated point of contact.