In the construction stage of a project, a CxA is a staff member who works to identify issues when it comes to operations, installation, testing, and performance of a building. The CxA typically is responsible for establishing the Cx plan, observing testing, compiling the O&M manual, leading and managing the project commission process (design and/or construction), and works closely with the design, construction, and operation teams in a co-operative work environment that focuses on teamwork throughout the building’s design, construction, and post construction. A CxA has technical background and in depth expertise with the commissioning process including verification techniques, functional performance testing, system equipment and O&M knowledge.