The time table provides the chronology of the project activities but also of milestones and the deliverable in the form of a visual element. Activities, events and milestones are plotted in a chronological list (Y-axis) and against them time steps or intervals (X-axis). Thus, the expected starting time, the duration and the termination of each activity is presented in the form of a horizonal bar. The duration may vary from one week to several month, depending on the activity and the overall project duration