I have a table with row headers, which of course creates different groupings. We really need a visual separation of the groupings but I just can’t get the borders to work right. Where is the setting to run borders down grouped rows in table visualizations?
Currently, I can do this:

You can see the groupings of foo and bar but when you turn on borders, it adds a border to every row, as shown in both black and blue.
What I want is what I’ve drawn here in red, to visually separate the grouped data:

Anyone know where I can set that up?
 
      
    
