Graph Builder and Overlay

[#1]

Hello,

I am using the Graph Builder to create a wafer map of some leakage currents.  I've dragged the leakage current column over to the Overlay option.  It automatically gives 5 intervals/ranges; I've figured out how to edit the ranges, but I can't find how to add a new range.  Is there a way?  I prefer to use this over the "Color" option.  

Thanks, Natalie

[#2]

Set the column property "Value Labels" for the overlay column, and you will be able to declare as many intervals as you want

[#3]

Right click on the column --> Column Properties --> Value Labels --> Check "Allow Ranges" --> Input your range --> Click "Add"
That should do it