Explanation:

In an Investment Policy Statement (IPS), the Procedures section typically outlines the administrative and operational processes, including how the IPS will be reviewed and updated to remain current. This section addresses:

1. Review frequency - How often the IPS will be reviewed
2. Update procedures - Steps to modify the IPS when circumstances change
3. Communication protocols - How changes will be communicated to stakeholders
4. Documentation requirements - Record-keeping for IPS revisions

The other sections have different primary functions:

• Investment Guidelines: Specifies investment constraints, restrictions, and permitted asset classes
• Statement of Duties and Responsibilities: Defines roles and responsibilities of various parties (client, advisor, custodian, etc.)

Therefore, the Procedures section is the most appropriate for explaining steps to keep the IPS current.