The room arrangement of the infant care area must:(1) Make it possible for caregivers to hear all infants and see all infants at a glance, and be able to intervene when necessary;(2) Include safe, open floor space for floor time play;(3) Separate infants from children more than 18 months older than the youngest child in the group, except when 12 or fewer children are in care, as required by §746.1605 of this chapter (relating to May I combine infants with children 18 months and older?);(4) Have cribs far enough apart so that one infant may not reach into another crib;(5) Provide caregivers with enough space to walk and work between cribs, cots, and mats; and(6) Ensure older children do not use the infant area as a passageway to other areas of the building.