Just throwing this out here because I had to figure this out for myself:
To add these to a game (such as the provided example map), start by creating a new map. Identify the file name of the map (usually listed at the bottom of the window), save, and replace that file with a file of your choosing. You may have to open a second game to view the maps, identifying them the same way. After you've done that, all you have to do is identify the proper tileset, install it, and then assign it to the map.
For example, I created a new map 032. I wanted Rustburo City, which I identified as map 303 in this map pack. I renamed it, replaced map 032, and then assigned the hoenn tileset to it. That way I can still reference the intro map. You can also do this to add maps to an already existing project to add new regions.
