When assigning tasks to audit team members, the auditor in charge primarily considers factors that directly affect the quality and efficiency of the audit, such as the auditors' experience and availability, as well as the need for outside resources. While the sufficiency of budgeted hours is important for overall audit planning, it is not a direct factor in the assignment of specific tasks to team members. The assignment is more focused on ensuring that the right skills are matched to the tasks and that resources are properly coordinated with client availability. References:

IIA Standards - 1200: Proficiency and Due Professional Care

IIA Practice Guide - Coordination and Reliance: Developing an Assurance Map