After writing two tutorials in as many days, I thought that I might as well do them up 'all pretty like' and share with the community as large.
This is the second of those - the first being 'Adding Hero Spawns To GC'* - and will provide a quick tutorial on editing the size, location and makeup of a GC's starting forces.
As with the other tutorial, this is by no means a ground-breaking 'everyfing I needz to make a GCs' tutorial, but it well explain the basics to those new to the topic.