Spine-Healthy Seating - Computer-Task Computer and task chairs are simplified executive chairs; they may feature many of the same options (lumbar supports, arm rest types, back heights, et c.) but they are usually not as extensive or as large. Products that feature height-adjustable backs and seat-depth adjustment are a smart choice for multi-person use, making them ideal for cubicle spaces, call centers, and receptionist areas. The smaller footprint of these chairs fits well in smaller workspaces.