Tag multiple elements with the same tag using the Add / Remove Host option during tag placement or add more hosts (leaders) to existing tags.
You can also customize the appearance of tag leaders, adjust them together or change the visibility of individual tag leaders.
This works for Tag by Category, Multi-Category, Material Tag, Keynote Tag, Material Keynote Tag.
 Tag panel, click
 Tag panel, click 
		 (Tag by Category).
 (Tag by Category). 
	  Host panel, click
 Host panel, click 
		 (Add / Remove Host).
 (Add / Remove Host). 
	 Use the Add/Remove Host command to add leaders to additional elements or to remove tagged elements from the selection.

To snap the individual tag leaders together and position them precisely, or move all of the leaders together:
 Leaders panel, click
 Leaders panel, click 
		 (Merge Leaders).
 (Merge Leaders). 
	 You ca adjust the tag leaders on placement or for existing tags.

You can tag multiple elements, but only show one or some of the tag leaders, to make the drawings less cluttered.
 Leaders panel, click
 Leaders panel, click 
		 (Select Leaders to Show).
 (Select Leaders to Show). 
	  (Finish) to save your changes and exit the edit mode.
 (Finish) to save your changes and exit the edit mode. 
	 