Unit production manager

A Unit Production Manager (UPM) is an executive who is responsible for the administration of a film. A UPM is usually hired by a producer of a film or television show, and is responsible for watching all costs on the project, with the intention of delivering the film or show on budget at the end of principal photography. The UPM will deliver the working budget to the financier during the "prep" period, therefore setting the business plan of the project. Typically, Producers are responsible for the cost-related decisions on above-the-line (primarily cast) issues, while the UPM is responsible for the below-the-line (production period) costs. The Film Director will usually have final decision on Cinematographer, Costume Designer, Production Designer, and Film Editor), and the UPM will make the deals and hire the remaining crew. Before principal photography begins they get all of the production elements in place, usually working in the production office. When the project has begun... full article at wikipedia