Final answer:
The responsibility for implementing policies and procedures typically falls under the executive branch, directed by the chief executive and enforced through various governmental agencies.
Step-by-step explanation:
The question of who is responsible for implementing the policies and procedures outlined in an instruction, ensuring consistency with relevant guidelines, typically falls under the executive branch of government. Once policies are established by legislative and/or executive branches, such as a Congress or president on a national level, they are then implemented by various governmental agencies. These agencies work under the direction of the chief executive, be it a president, a prime minister, or another analogous position, who oversees the enforcement of laws through their cabinet and bureaucracy. Additionally, local and state executives also have roles in implementing laws within their jurisdictions, often with the flexibility to address specific local needs. In a broader sense, individual unit commanders, local government authorities, and national bureaus are all parts of the larger implementation structure, but they act within the frameworks set forth by higher executive entities.