ExampleThe network in the figure is for a project in which the key resources is engineers. The network has been evaluated on the assumption that an unlimited number of engineers is available and the duration of the project is then $28$ days as shown.Resource aggregation:draw the histogram showing the demand for engineers Schedule the start of each activity if only $3$ engineers are available and determine the effect on the project duration.Assume in this case that no activity can be split.knowing that the project duration will become $30$ days draw $\backslash$table$[[$Activity$,$Duration,E$.$S$.,$E$.$F$,$T$.$F$.,$r$.$r$],[$A$,6,0,0,0,1-$