how can i do these in microsoft projects

b) Determine the possible shortest project duration and total project cost through solving for the all-crash solution (ie, the solution, where critical or not, each activity is crashed to its crash limit). 1 c) Draw the time-cost tradeoff curve for the project (project duration vs. project total cost). Starting with the normal project duration make 4 iterations using the mathematical programming formulation, each time decreasing the project duration by 2 days. Using the resulting 4 points determine the best project duration. Is this project duration optimal? Explain