One of the yos will seem like a regular one. The other will just be wrapped around the needle. Slip your needle in there and knit it. I imagine that you'll end up with a large eyelet. Actually, looking at the chart, on the back, you'll be knitting into the first yo and purling into the second.
"Trust the pattern!"
Time flies like an arrow, but fruit flies like a banana.
Hop aboard while we follow the cloud-covered van of knitting harmony, man!! Woooo!! --Hedgehog
IngridKH on Ravelry