The provider shall ensure the safety and security of each child at all times. Whenever an area of the home is being used for a child care activity and children are present, the provider may not allow that area to be used at the same time for any other purpose without prior approval of the office. In addition to meeting all other child supervision requirements of this subtitle, the provider shall ensure that an individual who meets the requirements of this subtitle for supervising children in care: Accompanies a child whenever the child is in the presence of an individual at the home who is not: Another individual who meets the requirements of this subtitle for supervising children in care; The child's parent, guardian, or other individual to whom the child may be released under Regulation .06 of this chapter; An individual who is authorized by the child's parent or guardian, and whose identity is verified by the provider, to provide a health care, educational, or other service to the child; Another child enrolled in care; or A child who resides at the home; and Remains within sight and sound of an independent contractor performing a service at the home whenever the independent contractor is in an area where a child is present, unless documentation is on file at the family child care home that the contractor has successfully passed federal and State criminal background checks and a review of child abuse and neglect records.