Hi,
As deadlines are approaching, and most essays are on their final drafts, I was wondering if I can add one of the essays (about an activity I spent 200+ hours on) I wrote for a supplement can be added in the additional information section of the common app.
I’d say go for it. I did the same thing last year. One of my service projects I did was around 200 hours, and the “short description” was not nearly enough to convey what I had gained and learned from that project, so I continued in the additional information section.