Please add a invite to chat in the chat panel, have a snall show whos online then click there name and send invite that pop ups on the page
Please add a small pane that shows all logged in to site on right side of chat, then we can click there name and send a invite that makes a small pop appear on the page they are on. if the click accept it opens the chat page for them. I know shout box works and its good, but its not for every page, and getting people to join you in chat when you have no way to contact them but a pm ,and that does not show very well if they don't where to look.
This is something we may revisit in a future release, but isn’t currently planned to be in a development sprint.