Quote Originally Posted by Orzy
First, one seed per pot. Second, what you're seeing is normal. Generally you germ a seed, plant it under about 1/3 of an inch of soil and when the tap root grows down it also kinda pushes your seed up. Don't recover it with more dirt, you'd just be taking steps back. All they need now is time.

Early on you'll just have a stem sticking out of the ground with a seed casing on it. Your seedling leaves (cotyledons) will start to grow and those will push the seed off. Sometimes if the seed is just sitting on the two leaves and is no longer connected to anything I'll gently take it off using a toothpick.
This is spot on for soil propagation.

However, if you just left them on the top of the soil then yes, you will want to cover JUST the white root-tip. Don't bother covering the seed shell because as stated by Orzy, it's completely redundant...

The only thing I HIGHLY reccommend is that you put a moderate level of air-flow over your plant to induce heavier rooting. Caution though, as your roots will literally shoot straight down to the bottom of your pot when you apply strong air-flow. So plan on transplanting sooner than expected. You might also want to increase watering after the plant is on it's first clove of leaves. (pointy leaves) [not the very first set of propagationary leaves but the next set.]