It gives this Message at the chat box : Only users nominated by the room owner may talk here. See the faq for more information. You have requested talk privileges in this room; please be patient while the room owner processes your request.
you should be able to but remember to edit out personal info. You have two minutes in which to delete anything in chat that you don't want left as a permanent record. Take a moment to hover to the right of your icon for your last message and see how the drop down button appears with the various chat options.
Little grey down arrow at top between your icon and the message
7-7.30PM I will be doing something else but will pick up occasional messages here. Back full time at 7.30. So, get your screenshot together and any questions.