I can help set this up, and would be willing to pay for programmer time, even though that just means installing on your server. I would be happy to purchase the app as well, so its not cost to this site. I run a health information site and we use the same chat. Its just a matter of adding another page and putting a link to it. Up and running in about an hour. It would be my "charity" donation to cover the expenses.
Let me know.