My initial thought would be that you want to create an "inbetween" piece that either accepts their country as input or takes one from their profile. This piece then redirects to the appropriate Chat Queue based on the result.
While I am not a CMS expert, my thoughts are that a simple way to do this would be through a dynamic content block. The user would enter their country (defaults to their profile country maybe?) and click Chat. The code in the background would then determine the appropriate Chat Queue to send it to and then just redirect to the chat queue link.
We only have one Chat Queue, and we fire it through our dynamic content block in this fashion:
CustomEvent.fire(LiveEvents.LIVE_EVENT, LiveEvents.LIVE_WINDOW_JOIN_QUEUE_QUERY, 'CHAT_QUEUE_SYS_ID','CHAT_QUEUE_NAME');
I see no reason why there could not just be a little logic before to determine which Chat Queue to fire into.
On the surface, this does not seem too challenging to develop from a technical point of view, however what will be challenging is the UI/UX around this feature.
I am sorry I do not have the code developed for this, as we only use the one Chat Queue but I hope this helps. If you need anything else please post back.
