Easy baby cardigan

Please help me with this pattern I have to make sleeves using cable co co 20 sts at the beginning of the next row; working across Co stitches work trim. How do I work across the co stitches? It does not say turn. What do I do? :knitting: :knitting:

The needle with the cast on stitches will be in your left hand. Just use the working yarn as normal and knit or purl per your pattern in the last cast on stitch.

Thank you I will try that.