Open the cheat console
PC: press Ctrl + Shift + C
Mac: press Command + Shift + C
PlayStation: press L1 + L2 + R1 + R2
Xbox: press LB + LT + RB + RT
Type testingcheats true
Press Enter
Enter the cheat code you want to use
Press Enter
Use Shift-click on Sims or objects for extra cheat options on PC and Mac
Use the controller interaction menu for console cheat options
Close the cheat console when finished
Save your game after using cheats