The Activity/Accomplishments Section on Common App

Because of limited character count, this is where you want to mention extracurriculars and passions that you have invested a lot of time in! Be sure to highlight skills/accomplishments/successes/what you did, and if there's an activity you spent a lot of time, feel free to list different aspects separately!

At the end of the day, there is no hard rule or specific way u necessarily have to structure it- do what's best to highlight the most you've done in the limited number of characters!