Decide which position to use. Kneel when you have to go down as far as a squat but need to stay that way for awhile. For each of these positions, face the object, keep your feet apart, tighten your stomach muscles and lower yourself using your legs.
Tilt seat forwards or level according to comfort or medical requirement.
Middle row of the keyboard should be level with the elbow, (forearms parallel to the floor). If the desk is too low raise with desk feet, if too high use a foot stand and raise seat height. Place mouse in easy reach zone by keyboard.
Choose a comfortable chair for the user to sit in. Studies show that the best seated posture is a reclined posture of 100-110 degrees NOT the upright 90 degree posture that. is often portrayed
Good posture is the basis of good workstation ergonomics. Good posture is the best way to avoid a computer-related injury. To ensure good user posture: