Supplier Rating Table?

Does anyone know where the Rating Table that is used for the Supplier Ratings is? I would like to put in the parameters for the combobox. The form appears to look at a Rating Table, and I see the table in the Data Dictionary Viewer, but I can’t find a data entry form for it?

I found there is a UI Entry form for it so I just added a new menu item and used the existing form. Not sure why it isn’t there by default but it was easy to add.