The film's director will select important department heads (keys) or support personnel related to their work, including the casting director, cinematographer, costume designer, production designer, and film editor. For below-the-line matters, the UPM often negotiates deals (for location, equipment, etc.)
The film's director will pick key department heads or relevant support staff for their roles, including the casting director, cinematographer, costume designer, production designer, and film editor. For off-screen issues, the UPM usually handles negotiations concerning locations, equipment, and other resources.