Procedures are the detailed steps or instructions for performing specific tasks or activities. They are usually aligned with standards, policies and guidelines, but they are more specific and prescriptive. System maintenance instructions and schedules are examples of procedures that should be documented and followed to ensure the proper functioning and security of the system.
References: The CISM Review Manual 2023 defines procedures as "the lowest level in the hierarchy of documentation. They are detailed steps that a user must follow to accomplish an activity" (p. 80). The CISM Item Development Guide also provides the following explanation for this answer: "Procedures are the correct answer because they provide the specific steps to be followed to maintain the system" (p. 11).