Hi Rolando, and welcome to the Wowza support forums.
I will answer your questions in reverse order.
3: The stream type for the application will need to be "live"
2: You can user the server listener, application module, or both on an application.
1: The URL for playing back the stream will be what you name the stream in the .smil file. For example:
to play this schedule you would use "Stream1" as the name of the stream.
<playlist name="pl1" playOnStream="Stream1" repeat="true" scheduled="2013-09-25 16:00:00">
<video src="mp4:sample.mp4" start="5" length="5"/>
I hope this answers your questions.