Informally, Roberta's answer is fine. More correctly/formally, you could write: "Members of the committee will be the President, me; the Vice-President; the Treasurer, and a Community Member". We often forget that "in a list", it can be of individual words or of phrases or anything that requires Internal Punctuation. (Here, I am using some Capitalization to emphasize words that I would accentuate if I were Speaking). The first thing to do, when one of the Set/Series of items has internal punctuation, is switch from commas to semi-colons. In this case, by adding "me", you have internal punctuation. Titles of officers should be capitalized and by writing "Community Member", you can " Honor with Capitalization" all participants and keep things shorter. The "member of the community", when reading your list, Feels just as important as the officers in the exchange/consensus. It is always foremost to keep language easily understood; in that regard, shorter, when Clear, is better. I know that I got a little "carried away' with this answer; sorry. This is ONE (Ha!) of my Things!