Dealers can place orders once a week, Tuesdays I think. They need to have an allocation to order a Camaro at that time or the order will not move forward and be picked up for production. If you're in Detroit, I would contact Joe P at James Martin Chevy. He's the one who gives us all the info on this forum about ordering and about all the steps in the process.
ChevyFleet@aol.com
See his thread about the process.
https://www.camaro6.com/forums/showthread.php?t=415251