1. Locate the area where the seed was attached inside the pod - - usually this is where the seed is a bit 'pointy', but if the seed is round or square in shape look for a tiny round area where the seed coat appears darkest. With the tip of a pen knife or paring knife, slightly scarify (nick) the seed coat - - no more than to expose the very light coloured inside of the seed. If you don't like using knife tips while holding small seeds, another means of scarification that works well is to rub that same area with an old emory board (or other fine sandpaper material) to expose the seed germ.
2. Next, soak the scarified seed(s) for about 12 hours (overnight) in water. Your seeds will become plumper and the hull will be softer. If not softer, let the seeds soak for another 12 hours.
3. You won't be able to see it at this point but your seed has already begun to germinate, thanks to getting a bit of moisture inside the hull. Now's the time to sow the seed(s) in moistened soil.
I usually dust the top of the container(s) with ground cinnamon - - just a slight dash to each 2 in. pot in the seed tray. Then I stir the cinnamon into the soil and wet it down thoroughly. Cinnamon is a natural anti-fungal agent, retarding or even preventing the occurence of damp off - - the #1 killer of seeds in the earliest stages of germination.
Back to sowing - - Seeds from the Caesalpinia genus require sunlight to fully germinate. Sow your seed(s) only half-way into the moistened soil, the scarified end down into the soil, the rest mooning the Sun.
4.Mist the seed(s) well, at least twice daily until the sprout pops up to a height of about 2 inches, then you can top-water once a day until the seedling tosses off the seed hull - - do not pick it off yourself, please. Once the plant has shed the seed hull, begin to wean the plant away from daily watering, until you are watering only once a week.