As an assistant set designer, your job is to help design the set for a film, television program, or theatre production. In this role, you may participate in each rehearsal, select art that fits the production, determine when to add or remove material from the stage, and otherwise help to keep things moving. The most important part of this job is selecting and acquiring set pieces on time and within the production budget. Assistant set designers usually work under one or more directors, such as the art director or production designer. You often see this job under a variety of titles, such as assistant art director or production assistant, so be sure to look at the content of each job post instead of just the title.