Hello,
This is controlled by the multibox functionality. The reason you are seeing X of 12 is because they are all sharing the same grouping. If you want them to be isolated you can create separate groups for this.
We have documentation which explains how to link to multibox and create groups here:
http://www.shape5.com/tutorials/joomla/s5_vertex_guide.pdf#page=24&zoom=auto,0,261Also please be advised we try to get to all threads the same day but it can take up to 24 hours for a response depending on the amount of tickets we have in the queue.
-Mike