I don't think waypoint can be triggered, as they are not entitys
However, you can probably edit his script, i know very little about FPI, but you could make him start walking waypoints only once he has been activated/used. I'll see what i can come up with
Or you could make it so that you can't "see" him till he walks out to you.
Make it so that he dosn't spawn at start then use a trigger zone
to spawn him, he will start walking waypoints then so make him walk from around a corner or behind a prop
Like i said, ill see what i can do
All the best
Yeah... got hurt when i tripped... on some bullets