Watch a YouTube video on how to construct inseam pockets:
With RST and notches aligned, sew one set of Pockets to the Front (leg/skirt) at the side seam (seamline ‘A’ on the pattern). Stitch only between the notches.
Clip the seam at the notches and sew an understitch on the side of the pocket bag. This is pocket bag 1.
With RST, lay pocket bag 2 on top of pocket bag 1, align and sew both pocket bags together (seamline ‘B’ on the pattern). Note that the straight edge of pocket bag 2 is left free to sew to the back leg/skirt side seam. Neaten around the pockets using an overlocker/serger. Secure stitch each end of the pocket opening.
With RST, pin front to back at the side seam. Sew along the side seam, through the straight edge of the back pocket and finishing at the hem. Take care not to catch the front pocket opening as you sew. Neaten using an overlocker/serger and press toward the back.