With a little help from my friends… (cue Beatles music) — I’ve figured out how to handle tile stuff. Basically you’re going to have the tileset panel, that you are able to select tiles by dragging a selection box. Then a “brush” is automatically created, then you simply “stamp” or draw it onto the map. On the map you have to hit shift and click-drag, to select, otherwise it will draw on the map… to erase you’ll use the right mouse button to erase where there were tiles in the brush. I’ve seen this in action and it seems quite simple, and easy to use.