as ross said, if you are up to some slenderman-thing ( i cant hear it anymore^^), thats another thing you would have to do there, using threat-triggers (different spawning-timers (screen-warning) and maybe different lifetimes (percistance). if it should actively move (amnesia-style), also generating intelligent waypointwalks and threat-triggered speed-changes in the zones where it should appear. takes randomness out of the build so you get more control, while threat-trigger causes that there is still no consistency for the player.
you have to think of an individual system here, its not an AI-script if the maze is more complex than 2 normal rooms in a row.
but maybe ross and i are wrong and pace10.fpi in peopleĀ“s folder is enough, you may try...but i dont think so. same for darkai-setup.
if slenderman is not the theme, ignore comments about it.^^