Short Rows on a Mohair Shawl Collar

Yes, that is the pattern I am working on and I haven’t exactly worked short rows before. I understand the concept, where you wrap and turn to do an incomplete row (I think!).

The instructions say to pick up and knit 119 sts (I picked up and knitted 101 sts, a multiple of 6 + 5 on mine) with a circular needle around the collar. Then I did Rows 1 and 2 on the round needle without connecting them ( I turned and went the other way when I came to the end of row 1).

Afterwards the pattern says “cut yarn and attach it just before the center 33 sts on back.” I have 37 sts on back so for me it would be the center 35 sts. Then it says to work 2 rows over these sts (The pattern is K3 P3 Ribbing).

How do I cut yarn and attach it? Why does it ask for it?
Then it gets into short rows… another story!

Thank you!