Find the height adjustment feature and begin. Raise yourself as high as the chair will allow. Slowly lower yourself down so that your feet are firmly placed on the floor. In this position, your hips should be slightly higher than your knees and your thighs parallel with the floor. Find the seatpan angle feature.
Most people prefer the seatpan to be adjusted parallel with the floor.
Find the height adjustment feature for the chair back. Adjust the angle of the back to allow for and upright or slightly reclined posture. Find the arm adjustment features and position them to the lowest setting. While you are sitting in the chair, relax your shoulders and arms down to your side. Slowly raise the arm supports until your can gently rest your elbows and forearms.