MY QUESTION: How do you graph this showing only critical activities?

The Whole Question:Use the LOB Method to solve this problem. For the eight-activity house shown below, each task in the network shows the man-hours needed and the number of crew members. If you are to construct 7 houses in 42 days, calculate the number of crews to be involved in each task and draw the schedule.Draw the critical activities separately from the non-critical activities. 8hr a day