To test for proper dampness of the vermiculite substrate in the incubation bins...take a handful of the moist vermiculite. If you can't squeeze out more than a drop or two of water the vermiculite is moist enough. If the containers have beads of moisture on the insides of them they are humid enough. This is the way I've done it for many many years. Lots of people weigh the bins and measure the water and vermiculite...I'll leave it up to them to tell you about that.
When I started keeping chameleons over years ago there were no guidelines. We just figured it out as we went along.
BTW I've never hatched carpet chameleons...but I have hatched panthers, veileds, deremensis, Comoros island chmeleons, common chameleons, lots of gecko species, water dragons, tortoises, cone heads, etc.