Slip Stitch Pattern

Hello there, I am making a Baguette Wrap by Valley Yarns and I don’t understand the Slip Stitch Pattern. It says to slip 1 st as if to knit, k1, yo, pass slipped stitch over both knit stitch and yarn over. I understand the slip 1 st as if to knit and then k1. What I don’t understand is how to do the yo. Do you go underneath needles to the front or above needles to the front? Thanks

Go underneath, between the needles to the front and then take the yarn over the right needle to the back.

Wrap a yo around the needle the same way you do the knit stitch.