okay, i'm suppose to go into lockdown tonight, yay!!! but i'm confused about where to add water in the bottom. the directions i found online arn't that clear, and i lost the ones that came with it looong ago, lol. i have the middle part filled, and it says to add water to the "other compartment". well, there's 2 other ones..., which one do i fill??? the one in the middle, or the one at the edge?