Noss Bigga Prod

How can I get implement these or learn more?

New member, not sure if this is the right place to post but.. My friend and I just purchased this software about a week ago. We're nothing special but we've got big plans. We're working on a game that's based in this time period (details aren't too important). We're not really fond of the combat system that the game comes with. Is there any way to implement a new one? I've seen vids of games with a side-view, but is there anyway to add anything else?