How do Gantt charts assist schedulers in arriving at feasible schedules?

What will be an ideal response?

The progress chart shows the current status of jobs already in progress in the shop. The machine chart shows the sequence of work scheduled at each machine. This chart can be used to determine if a new job can be inserted in the schedule of any machine without disrupting the progress of current jobs. In addition, the machine chart can be used to arrive at a different schedule of the current jobs by trial-and-error.