@monia_vuk I don't think you have to add them all to your game, but they do come in two separate downloads One is called MC Command Center, and there is another we can't talk about, but it starts with a W. Under the documentation tab will explain what everything does. I know you don't have to add all of them, but I can't remember which ones are the ones that must be included. You can ask someone over there to find out for sure. You also have the ability to turn things off with this mod also. You don't want sims getting married or having children, there are settings for this as well, depending on the module you have.
What I like to do is use a tester save to work on my settings. Once you set your settings for one game save, they will work for all your other game saves. Also when there is an update, there are a couple of files that have your saved MCCC information to carry on to the next patch level, so you don't have to adjust your settings all over again.
