From top level assembly go from modeling to drafting (if prompted do not select any sheet, just cancel it), you should be able to select the title block (and hide/delete it), if not go to layers and disable the visible only checkbox on layer 256 (default for title blocks)
This always worked for...
A quick and dirty solution could be to add a conditional for the material before accessing the graphite electrode data (size option, length and width) (see picture below)
I have tested it in NX 12.0.2mp5 and it works, but you have to apply the changes when switching the material and pick the...