Sit deep down to the back of the seat. In that case, so that the front part of the seat is bent so as not to press the back side of the thigh, adjustment of the depth of the seat surface is unnecessary.
Align the seat height with the knee. For height adjustment, please use the lever on the right side under the seat.
Please read and work with a posture that you feel comfortable.
Once you get caught in the armrest, move the seat face back and forth, to the left and right, and you will refresh your mind and body.
Grinding can be fixed with a gliding stopper on the left side under the seat. Please use it when you want to work with a stable posture.