Your pattern means, slip a stitch, knit 1, then pass that slipped stitch back over the st you just knitted. To do this, pick up the slipped st with your left needle, pass it over the stitch you just knitted, and off the needle. Then knit 5. There are great videos on You Tube that show the skp stitch! By the way, skp stands for slip, knit, pass.
Hope this helps!
Pat