What is a Gantt chart exactly? There may be no one project leader, either—only multiple managers, on multiple teams.
Unlike later Gantt charts, Schürch's charts did not display interdependencies, leaving them to be inferred by the reader.
This will reverse the order of the Gantt chart, so it shows the first tasks at the beginning and the last tasks at the end.
Step 5 - Estimate Durations Duration is the time between the start and end of an activity.