Here are a few tips to help you meet the word minimum:
If you are a marketing communications manager, you might give an example of a marketing program that you created, some of the key decisions that need to be made, the kinds of vendors you needed to work with, what made the program a success, etc.
If you are a development engineer, you might give an example of a product that you created, the tools you used to design it, one or two of the interesting challenges that you needed to overcome, lessons you learned from the experience, etc.
"I help students find suitable colleges."
you might expand on this task and write:
"I help students find suitable colleges by first determining what they would like to study, what kind of social environment they would like, if there are particular extracurricular activities of importance, if there are geographic preferences, etc. Then I consult numerous resources such as CityTownInfo.com, Petersen’s and Princeton Review that help the student and I develop a set of candidate colleges…"
Examples: