How to chunk load
MMCC uses the mod Feed the Beast utilities in order to chunkload. In order to force-load a chunk, simply shift+click on a tile in your FTBU map that you've already normally claimed.
In order to decrease the amount of stress on the server, chunks marked for chunk-loading will only be loaded while you are online. You can learn how to gain the ability to chunkload while you are offline by reading this article: How to Vote