how would i create a chance for a train to take the alt path at the start of the round?

[Shisho]

i want to experiment with alternate paths in a sort of special payload map, but im a bit confused on how i would do the alt paths. i know i need to enable it with a input but is there a way where i can set up a trigger or something so theres a chance for the alt path to be enabled at the start of the match?

 

[Kill_the_Bug]

this might help

 

[Shisho]

this might help

thanks