If you are referring to the Scene Trigger event on the scene director; it can trigger a scene director in the same scene. It uses a name based lookup, so it will trigger it for every scene on the output with a matching name.
You can also do it through visual logic or scripting.
e.g. (here is a script you can add as an event onto one scene director to trigger another in the same scene)
`dim sd as xpSceneDirector
self.GetSceneDirectorByName("my other scene dir", sd)
sd.Position = 0
sd.Play
`
#XPression