Amendments. Any amendment to regulations, restrictions or conditions for an existing planned development must be approved by the Town Board. Such regulations, restrictions or conditions may include but are not limited to changes or alterations to landscaping, architectural design, type of construction, sureties, lighting, fencing, planting screens, operational control, hours of operation, signs, improved traffic circulation, deed restriction, highway access restrictions, minor alterations or minor additions, building height or area of existing structures, and off-street parking or loading requirement changes.