You've been increasing on the knit rows at the raglan line between the front and sleeve and at the back and sleeves. So row 12 is
K6,X, K2, X, K15, X, K2,X, K23, X, K2,X,K15.X, K2. X, K6. 81 stitches.
Now the instructions want you to increase at the front edges on the knit rows. The increases would be at the number signs:
K6,X, K2, X, K15, X, K2,X, K23, X, K2,X,K15.X, K2. X, K6
or you could place them one stitch in from the edge. You could do the same kind of increase that you have been doing for the raglan line or you could do an increase like this one.