I also came here from Stencyl... and to Stencyl from Game Maker... thankfully I ended up here as Construct2 "programming" is by far the easiest for how my mind seems to work.
The key to Construct2 is to embrace its lack of limitations in designing, think creatively... ie. it doesn't need a special object like regions in Stencyl. Construct allows you to easily make your own, simply create a sprite by d-clicking canvas, selecting new sprite, dump paint on it, check "invisible" to yes, and change opacity on main layout design screen to like 20-30 to remind you its a trigger (and so you can see through it). Now you can place this in your doorway, exit point, etc and then use events like On-collision or Is-overlapping to trigger your own region changes to new layouts or even to previously hidden layers in the same layout...