Using Data tables when there are MULTIPLE things that can change

Hi

I have to use data tables to calculate Net Present Value (NPV) by altering specific variables.

My NPV is the result of a series of calculations to ultimately arrive at a cash flow figure and then apply the WACC (average cost of capital)

I understand how to use data tables But for the life of me i cant figure out how im going to tell excel that im changing for example wage costs and not fixed assets when trying to asses the NPV sensitivity

My sheet and calculations are all set up


Ive done it manually by altering the figures on the Inputs and Data Sheet.

My NPV calculation is on the Workings and calculations sheet.

The data tables i have done manually are on the Inputs and Data sheet.

Any help would be very much appreciated