Crates in game??

How do I make crates placed in Sapien fall automaticly when a game starts?
I've placed several crates in stacks or on conveyor belts, but they do not fall or move until they are shot or bumped into by a player. This poses a few problems for game play, so would be great if anyone could help.

I'm pretty sure theirs a flag in sapien you have to check on the boxes. I would look it up but I'm not on a horrible OS right now. Just look, there's something in there you have to flag.

I think you uncheck "starts at rest"

Yea that was it.