I was advised (by the kind of person you really want to listen to) to use Use USE the space given. Smart lady. Glad I listened.
I tried to make my application as interesting as possible so the adcom would WANT to keep reading (and ultimately want to MEET me because I seemed so interesting).
There is space in this area, so use it.
Example. I did a medical mission trip to Haiti and had a few interesting things happen while there. So, there was a little "essay" in the description area that hopefully not only drew the reader in, but made them want to meet me so they could ask more about it. Make sense? They still got the info of dates and what I actually did, but this way, there is a better chance they actually read it, perhaps remembered it, possibly stood out, maybe won me an interview.
You want to stand out (always in a positive way) and be memorable. You want them to say to themselves "dang, I want to meet this person!"
I hope this helps. Good luck to you.
PS Another Example. I have had a long term gig of speaking to at risk women about domestic violence in a group setting. I wrote about how they react at first being that I am a pretty big guy and how by the end they open up and pour their hearts out to me. One interviewer only wanted to talk about this and asked if I had an opinion as to why these women could open up to me. So, in this case, using the space provided for some narrative and not just dates and facts worked to my advantage.