displacing term?

I am knitting drops 98-35 http://www.garnstudio.com/pattern.php?id=2587&cid=17

Instructions say: Now work 1 round displacing the rib 1 st to the left.

How do I do this? My next st would be a knit.

You’re at the beginning of a round? Work the next stitch as a purl stitch to begin the round, then k3p3 around. At the end of round you’ll have 2 purl sts next to the p1 that began the round.
This will cause the rib to jog or be displaced one stitch to the left.

Yes I am at the beginning of a new rund. Thank you salmonmac, I understand now. Thanks for your help.