Ridge, Russ may have a different idea, but my method is to use the
VERY MOIST PAPER TOWEL IN A BAGGY method.
Get a couple of paper towels, and do this kind of like a procedure.
set the 2 paper towels on a large dinner plate for neatness. Pour a little bit of good n warm water on them. Not a whole lot, but enough to get them good n wet.
Set a few bean seeds generally toward the middle, but not too close to each other. Now fold carefully a few very simple folds, good n loosely. Just small enough to fit into a good sized baggy.
Close the baggy, but not tight or sealed.
Set the baggy into a shoebox and set a thermometer in with it.
Do all these things as gently as a surgeon. Luckily none of this involves anything difficult. Usually on top of a refrigerator will get you 75 to 85 degrees, but you're shooting for 80 degrees. Might want to do a few thermometer in a shoebox tests first to find the bingo perfect spot. Keeping that temp good n steady should be just right.
Each day open the baggy and make sure it is MOIST BUT NOT SOPPING wet. I call it good n moist. Seed wants air too, so don't seal the baggy.
This is the low tech method for testing germination rates. The high tech method is basically the same but involves a humidity and temperature controlled machine with lots of drawers on it, the size of a large appliance and costs thousands of dollars.
Hopefully you'll see the paper towel bulging in a week or so.
With beans, plant the sprouted seeds soon as they make their first root.
The root may grow into the paper towel. Don't try to separate it from the towel! Beans are root tender. Root hairs you can't even see break off easily.
Just carefully tear the paper towel, use scissors where needed, separate one out, and plant it root down in the soil and hole you have prepared. Try to make it look like it sprouted there. Let those cotyledons want to just come right up as normal as can be.
Do it optimally because beans are touchy about transplanting, but it is indeed doable. Be in surgeon mode.
"Doctor Ridge to pediatrics. Doctor Ridge to pediatrics please".