Please see the Classic UI Site admin Screenshot 1 attached below where custom action menu item was introduced and corresponding new UI panel/dialog allow users to choose the Tags..
What is the advice if the same needed to be done in AEM 6.4 Touch UI.. I am not able to find Any specific Community content or documentation.
Let me point more specifically what i am looking for?
Do i need to have new Action menu items in Torch UI Sites Console. see the 2nd picture attached below? if yes..could you give me any link/article how to add that action menu item?
If this can be achieved in different way in Touch UI AEM 6.4.. I would appreciate the suggestion.
You may need to overlay /libs/wcm/core/content/sites/jcr:content/actions/selection to add new options.
Customizing the Consoles should help here to customize the touch UI consoles using the resource merger principles.