Final answer:
During the Execution and Controlling phase, project managers must handle personnel and resource-related issues. This involves managing work overload, conflicts, and ensuring stakeholder buy-in and clear role definitions amidst project progress and changes.
Step-by-step explanation:
During the Execution and Controlling phase, project managers must address and resolve issues related to personnel and resources if they arise. Challenges like work overload, conflict, and ambiguity in defining the managerial role, as well as difficult work relationships, can significantly impede the progress of a project. The project manager must be vigilant in managing these issues while ensuring that clear timelines are respected, despite potential setbacks such as unexpected staff turnover or funding cuts. It's vital to maintain stakeholder buy-in and ensure that the team members are not overburdened, particularly when they are contributing to the project in addition to their funded roles. Ensuring that contingency plans are in place and that roles are clearly defined amidst the fluidity of team dynamics is key to the successful execution and control of any project.