not sure what exactly your asking...
when germinating the seed? It doesn't matter which way you place the seed....
when planting the seed, once the seed has fully germinated (meaning just that, the seed has cracked open.. and has its tap-root (the pointy end of the root) showing)... I personally always plant it with the taproot facing downwards into the soil. It's never failed me for the past 4.7 years I've been growing.. so I keep with that.
good luck.
peace.