Chair height should be adjusted so that your feet rest flat on the floor.
To raise: While taking your weight off chair, lift lever up.
To lower: While seated, lift lever up.

Increased tilt tension provides more stability and back support while you recline.
To increase tension: While seated, turn knob forward (clockwise, toward + sign).
To decrease tension: While seated, turn knob backward (counterclockwise, toward - sign).

Arm support helps take weight off your shoulders.
To raise or lower right arm: While seated, turn right wheel upward until arm loosens. Grasp base of arm support and raise or lower to desired height. Turn wheel downward to lock.
To raise or lower left arm: While seated, turn left wheel downward until arm loosens. Grasp base of arm support and raise or lower to desired height. Turn wheel upward to lock.

Wing arms inward for support while using keyboard. Swing arm out to support use of computer mouse.
To swing arms in or out: While seated, grasp front end of armpad and pivot it to the left or right.

Normally used with increased chair height, this relaxes the bend of your waist, knees, and ankles.
To position chair forward: Lean back and lift lever all the way up. Lean forward.
To resume horizontal position: While seated, push lever all the way down. Lean back.

Adjust lumbar height to support your spine.
To change height: Using equal pressure on each end of lumbar support pad, raise or lower it to desire position within adjustment track.

Switch between thick and thin sides so that it comfortably supports the natural curve of your spine.
To adjust depth: Using equal pressure on each end of lumbar support pad, lift it out of its track. (Notice that one side of support pad is thicker than the other side.)