I have three worlds right now all three have three scenes I dont know how to use the checkpoint. My checkpoint is assigned to my finish line end of scene one world one. do i need a load checkpoint? if so where? what does save transform and scene displacement mean? After the user beats world one, I want him to advance to world two scene one. Again I have checkpoints between my scenes. How do I use global counters? what is the point of add, reset and trigger? see attached photos of my finish line node and mind map.