Hi. not sure if you ever found the answer to your question, but I was wondering the same. There were some earlier threads on sdn about it, people gave some examples, etc... I did mine something like the following but it was tough with the limited spaces they give:
Child Life Volunteer,Inpatient Pediatrics-Strong Hospital,couple word description,dates; next one... but others have done it slightly different. u can just check out the older threads/posts as well.