1) Go to :
C:Users( YOUR USER )AppDataLocalLowMidhardFatalZone OutbreakSaves

2) Edit the files that you want with a text editor (Notepad, SublimeText, ... ) the values of your desire:
commandCenter.json
equipmentShop.json
Food.json
gate.json
helipad.json
mercenaryBase.json
Microchip.json
Money.json
Scrap.json
trainingRoom.json

3) Enjoy