A chart pattern shows the results of your knitting--not how many you start with. So you will just work row 2 as it's written, and those two yo's will give you the two extra stitches that you need.
When you see the + signs on row 4, you will need to cast on 5 more stitches, though.
"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