Melee weapon selection: Bool or Array?

Mmh… I’m nearly here.

Only some explanation:

In the first pic, what “Target Active Weapon Pawn” needs for? What is it? And what is its name in the library?
In the second pic, What reroute nodes need for? How I can use them?
Because I’m still not understood it.

Ah! In the first pic, I can’t see where the execution go to.