Facilitated team workshops are a risk assessment approach that involves gathering data from work teams representing different levels of an organization. This method encourages collaboration and open discussion among team members, allowing for a comprehensive identification and evaluation of risks from various perspectives within the organization. It helps in capturing a wide range of insights and facilitates consensus on risk priorities, making it a valuable tool for effective risk assessment.
The Institute of Internal Auditors (IIA) Practice Guide on "Risk Assessment in Audit Planning" COSO Enterprise Risk Management Framework

Trend analysis is the analytics procedure that an internal auditor would use to compare performance information from one quarter to another. This technique involves analyzing data over a specific period to identify patterns, trends, and changes in performance metrics. Trend analysis helps auditors understand the direction of key performance indicators and assess whether performance is improving, declining, or remaining stable.
References:
* The Institute of Internal Auditors (IIA) Standards
* Data Analytics Techniques in Internal Auditing

When significant control issues are identified during a consulting engagement, it is the responsibility of the chief audit executive to ensure that these issues are communicated to senior management and the board. This ensures that the organization is aware of the risks and can take corrective action. Consulting engagements should not overshadow the priority of addressing critical control issues that may affect the organization's risk profile. References:
* "International Standards for the Professional Practice of Internal Auditing" (IIA Standards)
* "Internal Auditing: Assurance & Advisory Services" (The Institute of Internal Auditors)

Outsourcing fraud investigations to a third-party service provider can result in a lack of familiarity with the organization's specific operations, culture, and history. This can be a disadvantage as external investigators may require more time to understand the context and nuances of the organization, potentially affecting the efficiency and effectiveness of the investigation. References: = IIA Standard 1210 - Proficiency and IIA Practice Guide: "Internal Audit and Fraud".

For a one-person audit function, the primary focus is on ensuring that there is a clear understanding of the audit policies and procedures without the need for extensive documentation. According to the IIA's guidance, a memorandum stating the policies and procedures would suffice for a one-person audit function, providing a concise yet comprehensive outline of the necessary protocols to follow. This approach ensures that the sole auditor has clear directives while avoiding the administrative burden of maintaining a more extensive manual that might be necessary for larger audit teams.
The Institute of Internal Auditors (IIA) - Practice Advisory 2040-1: Policies and Procedures