The new Master Agreement clarifies employee rights, maintains the balance between union representatives' agency work and representational activities. Should contact the responsible Agency or USDA's TARGET.Center at (202) 720-2600 (voice and TTY) or contact USDA through the. The most common types of Master Agreements are Challenge Cost Share,. Participating, and Stewardship Agreements. Exhibit E. Cost Share Agreement Instructions. Each of the numbered instructions below corresponds to form items that require further explanation. Person signing bid must have the authority to bind the firm in a contract. This Master Agreement is dedicated to Andy Pizzi. Mediation was both his vocation and passion.