How do you activate a scene as a response to a trigger?
For example I have a scene that turns most of the lights on. How do I attach it as a response to two different scenes?
Remember that triggers (or events) are just one way to initiate a specific scene. Sounds like you are asking how to have two scenes that run off the same trigger. The easiest way to do this is to duplicate the same trigger specifications for the second scene.
There also is a way in LUA to explicitly run a specific scene. Look in the “Conditional Scene Execution” sticky thread (at the top of this sub forum). I believe the scene running information is on page 9.