<p>Oh god.
In my last minute app frenzy, I stupidly left out two extracurricular activities on my UC app. They weren't that significant, just some leadership positions (none of them president). I've added my two major ones, varsity cross country and track captain, but I forgot to add two of the club positions I held. How much will this affect me?</p>
<p>It probably won’t affect you; you’ve probably already received the leadership points/consideration from your two captainships. It would be a minor detail to include on appeals if you have to write them. </p>