They function in the same way as EA’s i.e. sims get either a happy or tense buff, as well as new interactions when performing the activity they like or dislike. I’ve spruced up the buff descriptions and increased the amount of fun a sim either loses or gains when performing their custom preference activity!
One is for the Homework (all school levels) and the other is for Soccer (requires Discover University). They come in two separate packages, so you can pick or choose either!