Ahhh, you're knitting your socks flat...
Just looked your pattern up online: is this it?
If so, and you're working your socks flat on 2 needles then seaming up the side, I'm making an assumption that you're working short row heels and toes. I've only done a couple pair like this a long time ago on a machine, but the principle is the same for all flat knitted socks. Keep in mind I can't see your written pattern...
When you work your toe, you'll probably be working short rows over half of your stitches. This will form the toe cap, and afterwards you'd seam the toe cap to the instep at the toe ( on the top of sock). In essence you're working two heels, one for your heel and one to cover your toes. Take a look at this link to get a general idea:
Pretend this video is you working your toe, but at the end you'll seam the working stitches to the ones on your holder. Just make sure you work your toe on the same side as your heel. Good luck!