C'est en anglais mais cela peut servir à quelqu'un.
Before you plant the seeds, they need to be chilled in your refrigerator for a few weeks, or you can plant them outdoors now. They need some winter.
No need to break apart the seed. Nature will do that. Plant it close to the soil surface, not deep. Naturally, it would float on the wind, settle on the ground, and get covered a bit, but not buried deeply.
These seeds germinate slowly, so don't worry. I gathered them recently and they will sprout!