Multiples CRS should not be placed across the aisle from each other in the same row, since they could cause an adult to block the aisle when removing children during an evacuation. However, they can be placed next to each other in the samerow. For example, one CRS in the middle seat and one in the aisle seat of the same row is permissible as long as the customer in the window seat is traveling with the children in the CRS.