I'm a newbie at LDD so sorry if this seems like a stupid question, I'm about to create instructions for a model I have built. But one crucial part that I need does not seem to exist when I search for it - Bracket 1x2 - 1x2, 99781. Then I found a .dat file at ldraw.org/ and they say I should put it in the parts/ directory, or models/ directory, but in my recently updated version of LDD there are no such folders. I tried creating them manually and put the .dat file in there, but they do not show up in LDD what I can see.
So does anyone know how to add missing parts to LDD? Any help would be appreciated!