Which of the following is a use of Gantt Charts besides project scheduling?

Gantt charts are primarily known for their role in project scheduling, presenting tasks along a timeline to visualize the start and end dates as well as their dependencies. However, they also serve important functions in monitoring manpower allocation, which is why this is the correct choice.

In practice, Gantt charts allow project managers to easily identify not only the timeline of tasks but also the resources allocated to each task, including manpower. This visual representation helps in understanding how personnel are distributed across various activities, enabling managers to make informed decisions about manpower allocation and resource optimization. By reviewing a Gantt chart, managers can quickly see if there are potential over-allocations or under-utilizations of team members and adjust accordingly to maintain project workflow and efficiency.

The other options, while relevant to project management in a broader sense, do not leverage the specific capabilities of Gantt charts as effectively as monitoring manpower allocation does. For instance, estimating budget needs generally requires financial analysis rather than a timeline representation, and assigning team roles is often conducted during project initiation and planning phases, independently of the scheduling process depicted in Gantt charts. Evaluating system performance typically involves metrics and data analysis that fall outside the scope of what a Gantt chart is designed to address.