There are several objects in this 3D model.The chair contains settings: backrest tilt, overall tilt, height.You can adjust the settings while sitting.The chair can be rolled on the floor-there are hinges on the legs.The monitor is attached to the edge of the table and can occupy any position.The keyboard is located at any angle, if necessary-folds and slides under the table.During prolonged work at the computer is a workstation is very user-friendly. The model is created in Blender 2.79.Render-Blender.