There are posts in the /PostLib/MPost folder that you can try using. I know for sure they have a Fanuc one in there as I use that one occasionally. I use to use Virtual Gibbs and I feel that Gibbs handled subroutines in a much nicer way. After you program your part, there is also the option of using the transform operation technique. In your operations manager, there is a box next to the verify button. This has one option called rectangular array. It will lay out a bunch of parts in a grid format for you. I don't like this method much because it makes the programs really huge and if you have a controller with limited memory, it can be a problem, but it does work for some applications.
Hopefully this will help you a little.