 For decades, producers like Herman Miller Inc and Steelcase Inc focused on selling through their own dealers to companies that bought ergonomic chairs and desks by the truckload and employed teams of designers and technicians to deliver and install them. None of them were prepared for a flood of orders for a single adjustable desk from stay-at-home workers suddenly trying to figure out how to conduct Zoom meetings from spare bedrooms. Early in the pandemic in late April, 52 of employed Americans said they were always working from home to avoid catching or spreading the coronavirus, while another 18 reported sometimes working from home, according to a survey by Gallup. 