For #1 you can do it with a third-party plugin (“app”) called the Combination Switch. It’s free to dowload. More info here. Your scenario is described step-by-step here. Perhaps try to get some simpler scenes working first, so that you get used to the Vera3 interface (“UI5”).
For #2 you could also use the Combination Switch. This specific scenario hasn’t been discussed before. Let us know how you get on with #1 first.