I saw a reply in someone else's question where they advised

I saw a reply in someone else's question where they advised to use the following code:

[ppw id="70010509" description="Lopez Vs Chairez" price="1.25"]

That wasn't the full code, but just showing the part pertaining to my question, which is this. It gives a an id number, but I have found nowhere in the ppv set up process where an id number is generated. As it is a unique number, I assume it pulls some specific information from some saved setup that is associated with that number. Right?

How/where do I create my own id number? Please be very specific.
Can I just use this number and there's no problem?

Thanks, Earl