Trouble with pbf stitch...

[ArtsyAndi]

I am working on the Limeaide Fizz Shawl by The Sexy Knitter (on Ravelry).

In the pattern, there are a number of places where you do a yo2, which I understand. However, on the following row it has you "pfb in each yo2".

I am familiar with doing pfbs... but only when doing them on individual stitches. The way I am doing the stitch right now is leaving a ladder on following rows. In the end it should be creating a large closed hole.

Can anyone explain (or somehow show me) where my needles should go to complete this stitch?

[salmonmac]

The idea is to purl front and back and then again front and back into the double yo. That will give you 4sts in place of the yo and create the large hole that you see in the pattern.