This is a tentative description till I can get better pictures.
These project organizers have pockets, plastic pockets, with reinforced holes in them. You receive bobbins that you will wind the floss onto (video coming). You will then take a large eyed needle, or a small skinny crochet hook, to take the end of the floss into and through the hole.
You can use a large eyed needle, or a skinny crochet hook and thread floss through hole. Then pop that bobbin in it's pocket!
you can adjust the bobbin so that about an inch or so of floss is out of the hole. When you pull on floss the bobbin will unwind and then just cut, leaving about an inch sticking out.
I begin wrapping around the inside of the bobbin, building up on either side so as not to get the floss "jammed" at the ends which can lead to uneven unwinding of bobbin.
Another picture a little further along.
Towards the end I build up in the middle of the bobbin. This is one skein of floss.