We have a requirement where we need to display just the tags under namespace like "etc/tags/facebook/topic". Then if we type topic in the touch ui field then it should query the all the tags inside topics. Now with the tag query configured we have the option to get the tags under facebook if we type facebook option in the touch UI dialog. Can similar behaviour be achieved if we type "topic" in the dialog which lists out all the tags under topic that to in alphabetical order.
This is for touch UI dialog which is at the page property level.
