To close the console, press Control + Shift + C again. To use cheats, first you need to open the cheats console by pressing Control + Shift + C.
Usually very easy to use, they can enhance our builds and can help to make them look more realistic. There are a few cheats we can use while building in Sims 4. The Sims 4 Building Tutorials: Using Building Cheats to Enhance a Project by Norma Blackburn