Need help understanding a pattern

im working on nerissa from rowan.

the pattern tells me to k1, k2tog, yfrn, p2, *yon, sl 1, k2tog, psso, yfrn, p2 *rep to last 3 sts yon, sl 1, k1, psso, k1

when i psso, am i supposed to do it JUST as the video shows? Im a little confused. thanks for helping.

Lift the slipped stitch over the two you just knit together and off the tip. (or the one slipped at the end)

okthanks! that makes sense!!!