Multiple paths of waypoints?
 

I spent about 30 minutes looking at the stock SC "SAG Support" scenario trying to figure out how an attack was launched at a specific time. I kept thinking trigger, but could not find anything time oriented. Finally, I realized that it was a waypoint tactic set fire at a specific time based on distance and speed of travel. Doh!

Here's the part I don't understand. I am looking at the waypoints and there is definitely a single waypoint that leads to two different waypoints. How does that happen? How do you create something like that? What does it mean? (If you look at the mission, you will see such waypoints associated with the four Ocars defined of which two will appear in any run as part of a dynamic group.)

Thanks.