Learn about something (anything!) that you are interested in, and that is not part of your current classes. Can be academic learning, but can also be learning a new sport, learning new technique on a musical instrument, learning about career options, etc. This is really wide open. Spend 5 hrs across the entire semester, which is 20 minutes per week on average.
Serve in some capacity. You might participate in various service opportunities on campus, in your ward, on JustServe, etc. It doesn’t need to be some formally organized thing (e.g., help a fellow student with some aspect of the class, make dinner for your roomate who is stressed, go the temple, talk with someone who could use a visit). You can often serve effectively using things that you are good at, although your service does not need be connected to the learning activity. Spend 5 hrs across the entire semester.
Submit one-page maximum, summarizing your experience in both of these areas.