You can manually create a custom Gantt chart from scratch using the native Chart menu of PowerPoint. In its Chart menu, you can find several types of standard charts including line, bar, area, pie, ...
Tutoriels d'aide à la réalisation de graphiques de planification AMMAR, Anass. [Telechargement] Diagramme de Gantt sous Excel. Gestion de projet automobile [en ligne]. 28 mai 2010. [Consulté le 7 ...