Allow temporary extra layers in gauge types that normally would not allow them

So I have a table gauge with two dimensions. I tried to add a second layer.  This understandably did not work since it would look weird.  However I am trying to only temporarily add this second layer, and then make a table of the calculation of the first two layers and hide them.  This should end up with a normally formatted table with two dimensions.  It would be great to be able to do this.