The bone meal should be...
...wait, I got ahead of myself. (I have zone 6 experience; the rules may be different in other zones)
I'm pretty sure you can go ahead and plant the daffodil clumps into the ground. There may be a one year lag in any decent flowering while the bulbs readjust, but it would be less work for you and better for the bulbs if they were in the ground.
Okay, the bone meal should be applied to the surface of the soil and scratched in to the top inch of soil around each clump of daffodil plants.
