I made this .cap to try and find a crash I'm having in my game. This one isn't crashing so I figured I would comment it for a tutorial.
The cap shows loading up the player character on the menu offscreen, then creating the player with spawn points (the red objects) once you enter the game and when changing layouts. It also uses a door trigger sprite (the pink objects)to handle changing layouts.
The cap also shows a custom Fade In and Fade Out. It uses much less VRAM than a transition which is really useful for higher resolution projects.