How to show changes in positions on activities section?

Applying to College Common and Coalition Application
1

<p>In 10th and 11th grade I was a contributor to my school's newspaper. Now (12th grade), I'm the EIC. I've already filled the description section in describing my responsibilities as EIC.</p>

<p>What should I do? Should I make a separate activity (I have 2 out of 10 free right now) for the years during which I was a member?</p>

2

<p>I would format it something like this:</p>

<p>School Newspaper
Contributor (10,11), Editor-In-Chief (12)</p>