According to IIA guidance, the auditor in charge should consider the number, experience, and availability of audit staff as well as the nature, complexity, and time constraints of the engagement when determining resource requirements. These factors ensure that the engagement is staffed appropriately and that the audit team has the necessary skills and time to perform the audit effectively.
IIA Standards: 2230 - Engagement Resource Allocation
IIA Practice Guide: Coordination and Reliance: Developing an Assurance Map

The most effective way to identify the HR department's risks and controls, especially after recent process changes, is to discuss the department's present strategies and objectives with the head of the HR department.
This approach allows the auditor to gain current and relevant insights directly from the person most knowledgeable about the department's current operations, risks, and controls. It ensures that the auditor understands the current environment, any new challenges, and the specific controls in place to mitigate risks.
This method is more comprehensive and current compared to reviewing past reports or generalized organizational frameworks, which might not reflect recent changes accurately.
The Institute of Internal Auditors (IIA) Standard 2010 - Planning: "The chief audit executive must establish risk-based plans to determine the priorities of the internal audit activity, consistent with the organization's goals." IIA Practice Guide on "Engaging with Stakeholders"

According to the IIA's Implementation Guide for Standard 2340 - Engagement Supervision1, one of the activities that the chief audit executive or the designated engagement supervisor should perform is to review and approve the engagement work program before the commencement of fieldwork. The engagement work program should be based on the engagement objectives, scope, and approach, and should reflect the risks and controls identified during the planning phase. The engagement work program should also be discussed with the engagement team to ensure that they understand the tasks and procedures to be performed, and to address any questions or concerns. The engagement supervisor should document the approval of the work program and any subsequent changes in the workpapers.

To obtain a responsive action plan from management, the auditor is most likely to achieve this when both parties agree on the "Effect" attribute of the audit finding. The "Effect" refers to the impact or potential impact of the identified issue on the organization's operations, objectives, or risk profile. When management and the auditor agree on the significance and consequences of the finding, there is a shared understanding of the urgency and importance of addressing the issue. This alignment increases the likelihood that management will develop and commit to an effective action plan to remediate the finding.
IIA Practice Guide: "Formulating and Expressing Internal Audit Opinions" COSO Internal Control - Integrated Framework

* Current ratio (A) measures general liquidity (Current Assets ÷ Current Liabilities).
* Quick ratio (C) (Quick Assets ÷ Current Liabilities) excludes inventory and prepaid expenses, giving a more immediate liquidity measure.
* Profit margin (B) measures profitability, and times interest earned (D) measures solvency.
Thus, the best measure of immediate liquidity is the quick ratio (C).