How to "graft"?

I am knitting a stocking and will actually be finishing it soon. I plan to knit several others as well.

I have on thing that I can find no information on how to do…

The instructions read: Graft 2 sets of 10 stitches tog for toe.

How do you graft?

Grafting is also called kitchener stitch…the video is here.

Thank you so much for your help!