You’re half correct. You would knit into the front of the 3rd stitch, which is really the same way you knit a stitch anyway, then knit the other 2 stitches the same way you normally knit. Unless the instructions say to, you don’t knit into the back of the stitch.
Thanks a lot. It was so simple and I’m trying to do the pattern with a sample piece of yarn rather than start on the yoke of the sweater. It has a 16 stitch pattern worked over 58 sts.
First you have to increase 9 sts in a preparation row and then do a combination of ladder st, 3 st RT and 6 st cable across these 58 sts.
That’s a good idea to practice a stitch pattern before you actually start it on the piece you work on. Saves a lot of frustration and ripping back of the nicer yarn.