You Are the Director of Stadium Operations for a Professional

You are the director of stadium operations for a professional sports team. Your assistant director of stadium operations has recently retired, so you have decided to create two new full-time positions for the duties previously performed by the assistant director. The first position's job title will be Assistant Director for Field Operations, and the second position's job title will be Assistant Director for Vendor Contracts and Procurement. The field operations position will be responsible for coordinating game day preparations and operations, including security, set-up, usher coordination, maintenance, and stadium signage. This position will supervise a staff of two full-time operations assistants. The procurement position will be responsible for negotiating and administering all vendor agreements, including concessions, merchandise, security, and in-stadium signage displays. This position will work fairly independently with the aid of an administrative assistant.
What primary wage and/or salary issues should be addressed when writing the descriptions for these positions to ensure that these positions qualify for one of the white-collar exemptions to the FLSA?