Project is really unlike any other Microsoft product. It looks like Excel but most certainly doesn't act like it.
If you are using Project 2013 or Project 2010 - you can set the schedule to manually scheduled tasks to be able to enter start dates and finish dates. However, don't link those manually scheduled tasks - or your dates will change.
See the link below for a step by step on creating a Gantt chart in Excel:
https://www.officetimeline.com/gantt-chart-excel
Visio also creates Gantt charts. So if your director is looking for the presentation but not calculation, consider Visio or Excel.