Operating an AV solution is the day-to-day work of running a system that's already installed: scheduling and starting video/teleconferences, monitoring equipment during a live session so problems are caught before they disrupt a proceeding, and following an operator checklist for routine startup/shutdown so nothing is forgotten under time pressure.
Live operation also means having an escalation procedure — knowing exactly what to do, and who to contact, when something goes wrong during an active courtroom session, where “we'll fix it later” isn't an option and a calm, practiced response matters more than technical depth in the moment.
Managing an AV project covers the ongoing coordination side, even for a technician who isn't formally a project manager: tracking the classic project triangle of scope, schedule, and budget (improving one usually costs one of the other two), coordinating with vendors and other IT team members, and keeping documentation current as changes happen — change management, in the everyday sense of updating diagrams and records to reflect reality, not just the formal change-order process from Week 10.
The Newark posting's duty to “work in tandem with other IT team-members and the Audiovisual Supervisor” and to “carry out AV projects” sits squarely in this chapter — day-to-day operation and light project coordination are core, ongoing parts of the role, not occasional extras.