Please help. I dont think I did this right and I am stuck. I just dont know how to get the points in the middle of the graph. I only know how to get the end points

4. Below is a table of 4 workers and how many calculator and butter they can make. Currently all the workers are making calculators. Mark the best order in move there worken out of calculators and into making butter on the line before each worker's name ( writing 1, 1. ], said 4) Then draw the PPP line for this economy, Put butter on the bestmonth! axis. Calculators Arnold | Beity -2/6- /3 3 Charles 4 Diana Calculator 14 butter