Greetings all - first posting.  I've done a little looking through the Board archives, but couldn't find anything quite in my situation.  Apologies if it's been answered a thousand times before.

About a year and a half ago I was given additional responsibilities almost entirely unrelated to my previous work. They gave me a single mishmash of a title, but in effect I have two jobs.  I'm updating my resume for the first time in a while, and I'm trying to figure out how best to reflect the dual responsibilities.  For the moment I'm not switching positions, but I am applying to grad school for a second grad degree, and they asked for a copy of my resume.

Up to this point I've done the traditional bullet list of tasks and areas of work; I'm getting the impression from browsing here that I should have some statement of responsibility prior to the laundry list. 

What I guess I'm asking here is whether:

a) I should separate out the two jobs into different sections, and give those defined titles that will make sense to anyone? and

b)  I need to add a short descriptive paragraph before each of those two areas to break up the bullet list?

I'm not looking to leave this job just yet - there are many reasons to stay, including some major projects that I can use to beef up the resume.  I've basically decided to make the transition to the new area of work, and I think the shift from one to the other will go better if I have these projects under my belt.  But either way I want the resume to speak strongly to my work in the new area and not spend a lot of time explaining why I have any business looking for jobs in that field.

All advice is welcome,

Dan