The terms RS ans WS are for information to let you know which is which; you don’t make the sts any differently. For row 9, you just knit however you always knit a row. So from now on all odd numbered rows are the RS, and even rows are the WS.
You’re switching from garter stitch (knit every row) to stockinette stitch - knit on RS, purl on WS, except for the 5 sts at the beginning and end of the WS row which are always knit so you have a garter stitch border.
For Row 14 you would K5 (for the garter stitch border) then move the yarn to the back of your work, behind the needle as if to knit, and slip a stitch, then k1. You repeat the slip 1, k1 all the way across the row to the last 5 sts which you knit.