30. Subject to any other legislative or regulatory provision requiring the presence of a larger number of persons in a residence, at least 1 staff member of full age must be present, at all times, in a residence covered by this Division that has fewer than 200 rooms or apartments, in order to provide supervision. If the residence has 200 or more rooms or apartments, the minimum number of persons is 2.
Every person providing supervision pursuant to the first paragraph, whether or not the person is a care attendant, must hold the attestations referred to in section 22. The person must also hold the diploma referred to in subparagraph 1 of the first paragraph of section 23 or have obtained one of the documents referred to in subparagraph 2 or 3 of the first paragraph of section 23.