Courses are attended by federal leasing specialists to satisfy their leasing warrant training requirements, others who must receive leasing training to exercise the leasing delegations received from the General Services Administration, commercial brokers working under GSA contracts, building managers with responsibility for managing federal leased space, leasing contracting officers, and leasing contracting officer's representatives. Current knowledge of the commercial leasing market as demonstrated by current, relevant certification from a recognized real property association, e.g., the Institute of Real Estate Management (IREM), Certified Commercial Investment Member (CCIM) Institute.