Engr. Dennis Jay Mazo signs, seals, or stamps plans in accordance with applicable engineering laws, licensing regulations, and authority‑having‑jurisdiction (AHJ) requirements. Any document bearing his professional seal reflects work prepared under his responsible charge and indicates that the content has been reviewed for compliance with relevant codes, safety requirements, and design criteria. No seal is applied to documents outside his authorized scope of responsibility or licensure.

In the Philippines, the signing and sealing of electrical plans is vested exclusively in the Professional Electrical Engineer (PEE) under Republic Act No. 7920 (The New Electrical Engineering Law) and its Implementing Rules and Regulations (IRR), which grant the PEE sole authority to prepare, sign, and seal electrical system designs.