Could you please crate a Value Drive Tree and Issue Tree for me, also please explain your logic behind

As an Data Analyst for Monalco Mining, how can we reduce our costs by at least 20%($9M) through reductions in either Recurring or Non Recurring costs by 31st December 2020 ? The insights team has done some brainstorming and provided a high level summary of the major costs below - can you structure an Issue Tree using these provisioned 'issues' below? Hint: Think about the Opposite Words and how you might use this to help structure your Issue Tree! Time to close out our exercise and work out how to size up our analysis. We know we need to save $9M from our costs - can we flesh out the Issue Tree and revisit this exercise using the Values supplied in the table below? (Please use the Estimated Cost Reduction Column for your calculations. Don't worry about if your rounding is off by 0.1M )