Pick a sunny day, with ABSOLUTELY no chance of rain that day. If it rains within a few hours of the sealing job, you won't be happy. 24 hours will be plenty of time for it to dry though.
The perfect day would be sunny, but not incredibly hot, as sealing a driveway would be miserable work on a blistering hot day. Remember, you will be standing on black pavement in the sun.
Start work in the morning, to give it time to dry in the sun. Keep anything off it for a day.
It's generically called a screen, and they range from a wooden frame with a section of metal mesh on it that you shovel mixed material on, which sorts itself by gravity, on up to a mechanized thing on the back of a tractor trailer with a bunch of conveyor belts to take in mixed material, then sort and distribute the various sizes.
Depending on your workforce and budget, you might be looking at a version that's somewhat like the one you shovel through, but sized for a skid-steer loader or larger front-end loader. The mechanical wonders are nice, but expensive, and I doubt your job is large enough for someone to haul one in and set it up, at least economically.
The small stuff goes through, the big stuff goes off the lower end.
Picture found at aggman.com, though it's off on some blog platform with a different address.
After you sort out the rock and level the sand, put down geotextile fabric to prevent the sand and rock from mixing before you put the rock back on top.
Since your comment implies that you'll have at this with a shovel, rather than renting machines or hiring someone with them, I'd suggest dividing the site into a grid so you can do a manageable section and then move to the next section.
Here is a much smaller skid-steer loader and a screen suited to it, that could be easily moved if somone in your area has something like it and wants to work:
Images from www.omhproscreen.com
Best Answer
Architects and traffic engineers have used “Architectural Graphic Standards” by Ramsey and Sleeper since 1932. It’s been updated every 4-5 years by The American Institute of Architects and John Wiley & Sons, Inc.
They recommend a minimum INSIDE radius of 12’ for sports car, 15’ for sedan, 19’ for SUV’s and Cadillacs and 22’ for pickup trucks with small boat trailers (boat=16’ or less).
They recommend a minimum OUTSIDE radius of 22’ for sedans, 29’ for SUVs and Cadillacs and 41’ for pickup trucks with small boat trailers.
We do not provide a curb between the driveway and walkway on the outside radius for “extra” cushion.