There's a bit of science to it, but the general rule of thumb I work by is to mix it with as much other materials as possible. I take yard waste materials (rotting wood, green + dried leaves, grass, dead roots, etc) and kitchen scraps (vegetable peelings, pithy stuff, inedible stems, fruit rinds, fruit cores, etc) and toss it all in the same container with the chicken manure. I place all this into plastic totes with lids that click down in order to keep out rats, and small holes drilled into the bottom for drainage. Thankfully those are the only vermin I have to worry about trying to get at it.
I like to inoculate the new bins of compost with old, finished compost, so that it gets a nice dose of the kind of soil organisms I'm after. They help it all to break down more thoroughly and quickly.
Some people make a big fuss about layering it, but unless I've got a LOT of a particular thing, I don't go out of my way to make special layers. When I have "browns" (dead leaves as an example) I add my "browns". When I have "greens" (say, funky cabbage leaves, collard stems, bug-chewed stuff) I add those.
I have back problems and enough other things to do rather than turn compost by hand, so I have integrated my compost bins into my chickens' yard, and I periodically open the tops once stuff has broken down significantly and let them have fun. Its stimulating for them and they enjoy it while doing me a service. They scratch it up and turn it. I might walk out there and flip some of it from down low to up top for them to play in.
My methods aren't commercial by any means, but they work for me.
We are glad you joined our flock.
