How do you cast on 2 at a time?
For two at a time socks, you will start by casting on half of the number of stitches in Yarn A (32 stitches) for the first sock. Then, drop Yarn A and pick up Yarn B. Cast on the total number of stitches for Yarn B (64 stitches) for your second sock and pull a loop out at the halfway point with your needle cable.