When do activities commence in a late start schedule?

In a late start schedule, activities commence at the latest allowable time to ensure that they do not delay the overall project timeline. This scheduling approach focuses on using resources efficiently and minimizing any potential idle time, allowing for a more controlled workflow. By starting activities as late as possible, project managers can also maximize flexibility in resource allocation and potentially reduce costs associated with holding resources unused.

While other options suggest starting activities at various times, the principle of a late start is to delay initiation to the latest point that still allows the project to be completed on time. This contrasts with starting at the same time as other activities, at the earliest possible moment, or when resources become available, which does not align with the strategic intent of a late start schedule.