A Yo-Yo DESK® is designed to be as simple as possible to set up. The multiple option solutions from the Yo-Yo DESK® CLASSIC / SLIM ranges of desk riser require minimal assembly and are ready-to-use out of the box within five minutes. A screwdriver is supplied for attaching the keyboard tray. The Yo-Yo DESK® GO range requires a little more effort but still takes just 15-20 mins to install. We do recommend that you have someone to help lift your Yo-Yo DESK® onto your desktop. Once in place, it's ready for use. Yo-Yo DESK® PRO executive standing desks require 45-60 mins simple assembly: you simply build the frame and then attach the frame to the desktop. A drill is required. We provide simple, easy-to-follow instructions. We also offer a professional installation service free of charge on many models.