Your elbow is a pivot. Click as gently as possible. The keyboard should be close to the edge of the work surface to allow the user to pull the chair close enough maintain proper posture. Clutter under the workstation can limit the user's ability to maintain proper posture. Furniture legs, fixed drawers or pedestals can limit movement and disrupt the user's posture.
Additional area is required for writing and collating tasks.
These tasks require a higher work surface than keying. The compact nature of laptop computers prevents the user from maintaining proper posture. If used as a primary computer, the user should use an alternate keyboard and mouse or monitor. A docking station may be used to provide proper component distances to maintain user posture. The user, monitor and keyboard should be aligned.