Children and Young Persons Act (CYPA): Primary legislation governing matters relating to care, protection, and treatment of children and young persons in Singapore. Defines legal authority and responsibilities regarding children's welfare.

Guardianship of Infants Act: Legislation that establishes rights and responsibilities of guardians. Essential for determining the scope of authority that can be delegated to grandparents.

Mental Capacity Act: Relevant when authorization involves medical decision-making powers. Ensures proper delegation of authority for healthcare matters.

Personal Data Protection Act (PDPA): Legislation governing the handling of personal information. Ensures compliance with data protection requirements in authorization documents.

Scope of Authority: Key consideration defining the exact powers being granted to grandparents in the authorization letter.

Duration Specification: Essential element specifying the time period for which the authorization remains valid.

Delegated Powers: Detailed listing of specific powers being transferred to grandparents (e.g., medical, educational, travel decisions).

Emergency Provisions: Specific clauses addressing handling of emergency situations and decision-making authority in urgent circumstances.

Medical Consent Authority: Specific provisions regarding authority to make medical decisions or provide consent for medical treatment.

Educational Decision Authority: Provisions regarding authority to make decisions about the child's educational matters.

Documentation Requirements: Specifications for maintaining records and documentation related to decisions made under the authorization.

Revocation Procedures: Clear procedures and conditions under which the authorization can be modified or revoked by the parents.