1- Seat height: The feet must rest flat on the ground and the knee must form a 90 degree angle
2- Desk height: at elbow level when seated is relaxed.
3- Rest your arms on armrests or on the desk.
4- Tilt the seatback backwards by 2 cm to ensure good support.
5- Screen height: The screen should be positioned just below eye level
6- Distance to the screen: 1 arm's length at least (use an external screen of at least 19 inches, and external keyboard and mouse.)